/* For storing free space cache */
#define BTRFS_FREE_SPACE_OBJECTID -11ULL
+ /*
+ * The inode number assigned to the special inode for sotring
+ * free ino cache
+ */
+ #define BTRFS_FREE_INO_OBJECTID -12ULL
+
/* dummy objectid represents multiple objectids */
#define BTRFS_MULTIPLE_OBJECTIDS -255ULL
u64 total_bytes; /* total bytes in the space,
this doesn't take mirrors into account */
u64 bytes_used; /* total bytes used,
- this does't take mirrors into account */
+ this doesn't take mirrors into account */
u64 bytes_pinned; /* total bytes pinned, will be freed when the
transaction finishes */
u64 bytes_reserved; /* total bytes the allocator has reserved for
u64 bytes_super;
u64 flags;
u64 sectorsize;
- int extents_thresh;
- int free_extents;
- int total_bitmaps;
unsigned int ro:1;
unsigned int dirty:1;
unsigned int iref:1;
struct btrfs_space_info *space_info;
/* free space cache stuff */
- spinlock_t tree_lock;
- struct rb_root free_space_offset;
- u64 free_space;
+ struct btrfs_free_space_ctl *free_space_ctl;
/* block group cache stuff */
struct rb_node cache_node;
spinlock_t accounting_lock;
struct btrfs_block_rsv *block_rsv;
+ /* free ino cache stuff */
+ struct mutex fs_commit_mutex;
+ struct btrfs_free_space_ctl *free_ino_ctl;
+ enum btrfs_caching_type cached;
+ spinlock_t cache_lock;
+ wait_queue_head_t cache_wait;
+ struct btrfs_free_space_ctl *free_ino_pinned;
+ u64 cache_progress;
+ struct inode *cache_inode;
+
struct mutex log_mutex;
wait_queue_head_t log_writer_wait;
wait_queue_head_t log_commit_wait[2];
struct btrfs_root *root, u64 offset);
int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
- /* inode-map.c */
- int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
- struct btrfs_root *fs_root,
- u64 dirid, u64 *objectid);
- int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
-
/* inode-item.c */
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
#include "locking.h"
#include "tree-log.h"
#include "free-space-cache.h"
+ #include "inode-map.h"
static struct extent_io_ops btree_extent_io_ops;
static void end_workqueue_fn(struct btrfs_work *work);
.writepages = btree_writepages,
.releasepage = btree_releasepage,
.invalidatepage = btree_invalidatepage,
- .sync_page = block_sync_page,
#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
#endif
if (IS_ERR(root))
return root;
+ root->free_ino_ctl = kzalloc(sizeof(*root->free_ino_ctl), GFP_NOFS);
+ if (!root->free_ino_ctl)
+ goto fail;
+ root->free_ino_pinned = kzalloc(sizeof(*root->free_ino_pinned),
+ GFP_NOFS);
+ if (!root->free_ino_pinned)
+ goto fail;
+
+ btrfs_init_free_ino_ctl(root);
+ mutex_init(&root->fs_commit_mutex);
+ spin_lock_init(&root->cache_lock);
+ init_waitqueue_head(&root->cache_wait);
+
set_anon_super(&root->anon_super, NULL);
if (btrfs_root_refs(&root->root_item) == 0) {
return ret;
}
-/*
- * this unplugs every device on the box, and it is only used when page
- * is null
- */
-static void __unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
- struct btrfs_device *device;
- struct btrfs_fs_info *info;
-
- info = (struct btrfs_fs_info *)bdi->unplug_io_data;
- list_for_each_entry(device, &info->fs_devices->devices, dev_list) {
- if (!device->bdev)
- continue;
-
- bdi = blk_get_backing_dev_info(device->bdev);
- if (bdi->unplug_io_fn)
- bdi->unplug_io_fn(bdi, page);
- }
-}
-
-static void btrfs_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
- struct inode *inode;
- struct extent_map_tree *em_tree;
- struct extent_map *em;
- struct address_space *mapping;
- u64 offset;
-
- /* the generic O_DIRECT read code does this */
- if (1 || !page) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- /*
- * page->mapping may change at any time. Get a consistent copy
- * and use that for everything below
- */
- smp_mb();
- mapping = page->mapping;
- if (!mapping)
- return;
-
- inode = mapping->host;
-
- /*
- * don't do the expensive searching for a small number of
- * devices
- */
- if (BTRFS_I(inode)->root->fs_info->fs_devices->open_devices <= 2) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- offset = page_offset(page);
-
- em_tree = &BTRFS_I(inode)->extent_tree;
- read_lock(&em_tree->lock);
- em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
- read_unlock(&em_tree->lock);
- if (!em) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
- free_extent_map(em);
- __unplug_io_fn(bdi, page);
- return;
- }
- offset = offset - em->start;
- btrfs_unplug_page(&BTRFS_I(inode)->root->fs_info->mapping_tree,
- em->block_start + offset, page);
- free_extent_map(em);
-}
-
/*
* If this fails, caller must call bdi_destroy() to get rid of the
* bdi again.
return err;
bdi->ra_pages = default_backing_dev_info.ra_pages;
- bdi->unplug_io_fn = btrfs_unplug_io_fn;
- bdi->unplug_io_data = info;
bdi->congested_fn = btrfs_congested_fn;
bdi->congested_data = info;
return 0;
if (btrfs_root_refs(&root->root_item) == 0)
synchronize_srcu(&fs_info->subvol_srcu);
+ __btrfs_remove_free_space_cache(root->free_ino_pinned);
+ __btrfs_remove_free_space_cache(root->free_ino_ctl);
free_fs_root(root);
return 0;
}
static void free_fs_root(struct btrfs_root *root)
{
+ iput(root->cache_inode);
WARN_ON(!RB_EMPTY_ROOT(&root->inode_tree));
if (root->anon_super.s_dev) {
down_write(&root->anon_super.s_umount);
}
free_extent_buffer(root->node);
free_extent_buffer(root->commit_root);
+ kfree(root->free_ino_ctl);
+ kfree(root->free_ino_pinned);
kfree(root->name);
kfree(root);
}
* ERROR state on disk.
*
* 2. when btrfs flips readonly just in btrfs_commit_super,
- * and in such case, btrfs cannnot write sb via btrfs_commit_super,
+ * and in such case, btrfs cannot write sb via btrfs_commit_super,
* and since fs_state has been set BTRFS_SUPER_FLAG_ERROR flag,
* btrfs will cleanup all FS resources first and write sb then.
*/
spin_lock(&delayed_refs->lock);
if (delayed_refs->num_entries == 0) {
+ spin_unlock(&delayed_refs->lock);
printk(KERN_INFO "delayed_refs has NO entry\n");
return ret;
}
int len = *max_len;
int type;
- if ((len < BTRFS_FID_SIZE_NON_CONNECTABLE) ||
- (connectable && len < BTRFS_FID_SIZE_CONNECTABLE))
+ if (connectable && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
+ *max_len = BTRFS_FID_SIZE_CONNECTABLE;
return 255;
+ } else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
+ *max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
+ return 255;
+ }
len = BTRFS_FID_SIZE_NON_CONNECTABLE;
type = FILEID_BTRFS_WITHOUT_PARENT;
- fid->objectid = inode->i_ino;
+ fid->objectid = btrfs_ino(inode);
fid->root_objectid = BTRFS_I(inode)->root->objectid;
fid->gen = inode->i_generation;
if (!path)
return ERR_PTR(-ENOMEM);
- if (dir->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+ if (btrfs_ino(dir) == BTRFS_FIRST_FREE_OBJECTID) {
key.objectid = root->root_key.objectid;
key.type = BTRFS_ROOT_BACKREF_KEY;
key.offset = (u64)-1;
root = root->fs_info->tree_root;
} else {
- key.objectid = dir->i_ino;
+ key.objectid = btrfs_ino(dir);
key.type = BTRFS_INODE_REF_KEY;
key.offset = (u64)-1;
}
struct btrfs_key key;
int name_len;
int ret;
+ u64 ino;
if (!dir || !inode)
return -EINVAL;
if (!S_ISDIR(dir->i_mode))
return -EINVAL;
+ ino = btrfs_ino(inode);
+
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
path->leave_spinning = 1;
- if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+ if (ino == BTRFS_FIRST_FREE_OBJECTID) {
key.objectid = BTRFS_I(inode)->root->root_key.objectid;
key.type = BTRFS_ROOT_BACKREF_KEY;
key.offset = (u64)-1;
root = root->fs_info->tree_root;
} else {
- key.objectid = inode->i_ino;
- key.offset = dir->i_ino;
+ key.objectid = ino;
+ key.offset = btrfs_ino(dir);
key.type = BTRFS_INODE_REF_KEY;
}
btrfs_free_path(path);
return ret;
} else if (ret > 0) {
- if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+ if (ino == BTRFS_FIRST_FREE_OBJECTID) {
path->slots[0]--;
} else {
btrfs_free_path(path);
}
leaf = path->nodes[0];
- if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
- rref = btrfs_item_ptr(leaf, path->slots[0],
+ if (ino == BTRFS_FIRST_FREE_OBJECTID) {
+ rref = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_root_ref);
- name_ptr = (unsigned long)(rref + 1);
- name_len = btrfs_root_ref_name_len(leaf, rref);
+ name_ptr = (unsigned long)(rref + 1);
+ name_len = btrfs_root_ref_name_len(leaf, rref);
} else {
iref = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_inode_ref);
WARN_ON(cache->pinned > 0);
WARN_ON(cache->reserved > 0);
WARN_ON(cache->reserved_pinned > 0);
+ kfree(cache->free_space_ctl);
kfree(cache);
}
}
/* make sure bytes are sectorsize aligned */
bytes = (bytes + root->sectorsize - 1) & ~((u64)root->sectorsize - 1);
- if (root == root->fs_info->tree_root) {
+ if (root == root->fs_info->tree_root ||
+ BTRFS_I(inode)->location.objectid == BTRFS_FREE_INO_OBJECTID) {
alloc_chunk = 0;
committed = 1;
}
return 0;
wait_event(caching_ctl->wait, block_group_cache_done(cache) ||
- (cache->free_space >= num_bytes));
+ (cache->free_space_ctl->free_space >= num_bytes));
put_caching_control(caching_ctl);
return 0;
cur_pos = extent_key->objectid - offset;
last_byte = extent_key->objectid + extent_key->offset;
- ret = btrfs_lookup_file_extent(NULL, root, path, reloc_inode->i_ino,
- cur_pos, 0);
+ ret = btrfs_lookup_file_extent(NULL, root, path,
+ btrfs_ino(reloc_inode), cur_pos, 0);
if (ret < 0)
goto out;
if (ret > 0) {
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
if (found_key.offset != cur_pos ||
found_key.type != BTRFS_EXTENT_DATA_KEY ||
- found_key.objectid != reloc_inode->i_ino)
+ found_key.objectid != btrfs_ino(reloc_inode))
break;
fi = btrfs_item_ptr(leaf, path->slots[0],
break;
}
- if (inode && key.objectid != inode->i_ino) {
+ if (inode && key.objectid != btrfs_ino(inode)) {
BUG_ON(extent_locked);
btrfs_release_path(root, path);
mutex_unlock(&inode->i_mutex);
continue;
if (btrfs_file_extent_disk_bytenr(leaf, fi) == 0)
continue;
- if (!inode || inode->i_ino != key.objectid) {
+ if (!inode || btrfs_ino(inode) != key.objectid) {
iput(inode);
inode = btrfs_ilookup(target_root->fs_info->sb,
key.objectid, target_root, 1);
u64 group_start = group->key.objectid;
new_extents = kmalloc(sizeof(*new_extents),
GFP_NOFS);
+ if (!new_extents) {
+ ret = -ENOMEM;
+ goto out;
+ }
nr_extents = 1;
ret = get_new_locations(reloc_inode,
extent_key,
ret = -ENOMEM;
goto error;
}
+ cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl),
+ GFP_NOFS);
+ if (!cache->free_space_ctl) {
+ kfree(cache);
+ ret = -ENOMEM;
+ goto error;
+ }
atomic_set(&cache->count, 1);
spin_lock_init(&cache->lock);
- spin_lock_init(&cache->tree_lock);
cache->fs_info = info;
INIT_LIST_HEAD(&cache->list);
INIT_LIST_HEAD(&cache->cluster_list);
if (need_clear)
cache->disk_cache_state = BTRFS_DC_CLEAR;
- /*
- * we only want to have 32k of ram per block group for keeping
- * track of free space, and if we pass 1/2 of that we want to
- * start converting things over to using bitmaps
- */
- cache->extents_thresh = ((1024 * 32) / 2) /
- sizeof(struct btrfs_free_space);
-
read_extent_buffer(leaf, &cache->item,
btrfs_item_ptr_offset(leaf, path->slots[0]),
sizeof(cache->item));
cache->flags = btrfs_block_group_flags(&cache->item);
cache->sectorsize = root->sectorsize;
+ btrfs_init_free_space_ctl(cache);
+
/*
* We need to exclude the super stripes now so that the space
* info has super bytes accounted for, otherwise we'll think
cache = kzalloc(sizeof(*cache), GFP_NOFS);
if (!cache)
return -ENOMEM;
+ cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl),
+ GFP_NOFS);
+ if (!cache->free_space_ctl) {
+ kfree(cache);
+ return -ENOMEM;
+ }
cache->key.objectid = chunk_offset;
cache->key.offset = size;
cache->sectorsize = root->sectorsize;
cache->fs_info = root->fs_info;
- /*
- * we only want to have 32k of ram per block group for keeping track
- * of free space, and if we pass 1/2 of that we want to start
- * converting things over to using bitmaps
- */
- cache->extents_thresh = ((1024 * 32) / 2) /
- sizeof(struct btrfs_free_space);
atomic_set(&cache->count, 1);
spin_lock_init(&cache->lock);
- spin_lock_init(&cache->tree_lock);
INIT_LIST_HEAD(&cache->list);
INIT_LIST_HEAD(&cache->cluster_list);
+ btrfs_init_free_space_ctl(cache);
+
btrfs_set_block_group_used(&cache->item, bytes_used);
btrfs_set_block_group_chunk_objectid(&cache->item, chunk_objectid);
cache->flags = type;
int btrfs_init_space_info(struct btrfs_fs_info *fs_info)
{
struct btrfs_space_info *space_info;
+ struct btrfs_super_block *disk_super;
+ u64 features;
+ u64 flags;
+ int mixed = 0;
int ret;
- ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM, 0, 0,
- &space_info);
- if (ret)
- return ret;
+ disk_super = &fs_info->super_copy;
+ if (!btrfs_super_root(disk_super))
+ return 1;
- ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA, 0, 0,
- &space_info);
- if (ret)
- return ret;
+ features = btrfs_super_incompat_flags(disk_super);
+ if (features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS)
+ mixed = 1;
- ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_DATA, 0, 0,
- &space_info);
+ flags = BTRFS_BLOCK_GROUP_SYSTEM;
+ ret = update_space_info(fs_info, flags, 0, 0, &space_info);
if (ret)
- return ret;
+ goto out;
+ if (mixed) {
+ flags = BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA;
+ ret = update_space_info(fs_info, flags, 0, 0, &space_info);
+ } else {
+ flags = BTRFS_BLOCK_GROUP_METADATA;
+ ret = update_space_info(fs_info, flags, 0, 0, &space_info);
+ if (ret)
+ goto out;
+
+ flags = BTRFS_BLOCK_GROUP_DATA;
+ ret = update_space_info(fs_info, flags, 0, 0, &space_info);
+ }
+out:
return ret;
}
unsigned long nr_written = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
- write_flags = WRITE_SYNC_PLUG;
+ write_flags = WRITE_SYNC;
else
write_flags = WRITE;
prefetchw(&page->flags);
list_del(&page->lru);
if (!add_to_page_cache_lru(page, mapping,
- page->index, GFP_KERNEL)) {
+ page->index, GFP_NOFS)) {
__extent_read_full_page(tree, page, get_extent,
&bio, 0, &bio_flags);
}
* because there might be preallocation past i_size
*/
ret = btrfs_lookup_file_extent(NULL, BTRFS_I(inode)->root,
- path, inode->i_ino, -1, 0);
+ path, btrfs_ino(inode), -1, 0);
if (ret < 0) {
btrfs_free_path(path);
return ret;
found_type = btrfs_key_type(&found_key);
/* No extents, but there might be delalloc bits */
- if (found_key.objectid != inode->i_ino ||
+ if (found_key.objectid != btrfs_ino(inode) ||
found_type != BTRFS_EXTENT_DATA_KEY) {
/* have to trust i_size as the end */
last = (u64)-1;
#include "transaction.h"
#include "disk-io.h"
#include "extent_io.h"
+ #include "inode-map.h"
#define BITS_PER_BITMAP (PAGE_CACHE_SIZE * 8)
#define MAX_CACHE_BYTES_PER_GIG (32 * 1024)
- static void recalculate_thresholds(struct btrfs_block_group_cache
- *block_group);
- static int link_free_space(struct btrfs_block_group_cache *block_group,
+ static int link_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info);
- struct inode *lookup_free_space_inode(struct btrfs_root *root,
- struct btrfs_block_group_cache
- *block_group, struct btrfs_path *path)
+ static struct inode *__lookup_free_space_inode(struct btrfs_root *root,
+ struct btrfs_path *path,
+ u64 offset)
{
struct btrfs_key key;
struct btrfs_key location;
struct inode *inode = NULL;
int ret;
- spin_lock(&block_group->lock);
- if (block_group->inode)
- inode = igrab(block_group->inode);
- spin_unlock(&block_group->lock);
- if (inode)
- return inode;
-
key.objectid = BTRFS_FREE_SPACE_OBJECTID;
- key.offset = block_group->key.objectid;
+ key.offset = offset;
key.type = 0;
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
inode->i_mapping->flags &= ~__GFP_FS;
+ return inode;
+ }
+
+ struct inode *lookup_free_space_inode(struct btrfs_root *root,
+ struct btrfs_block_group_cache
+ *block_group, struct btrfs_path *path)
+ {
+ struct inode *inode = NULL;
+
+ spin_lock(&block_group->lock);
+ if (block_group->inode)
+ inode = igrab(block_group->inode);
+ spin_unlock(&block_group->lock);
+ if (inode)
+ return inode;
+
+ inode = __lookup_free_space_inode(root, path,
+ block_group->key.objectid);
+ if (IS_ERR(inode))
+ return inode;
+
spin_lock(&block_group->lock);
if (!root->fs_info->closing) {
block_group->inode = igrab(inode);
return inode;
}
- int create_free_space_inode(struct btrfs_root *root,
- struct btrfs_trans_handle *trans,
- struct btrfs_block_group_cache *block_group,
- struct btrfs_path *path)
+ int __create_free_space_inode(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_path *path, u64 ino, u64 offset)
{
struct btrfs_key key;
struct btrfs_disk_key disk_key;
struct btrfs_free_space_header *header;
struct btrfs_inode_item *inode_item;
struct extent_buffer *leaf;
- u64 objectid;
int ret;
- ret = btrfs_find_free_objectid(trans, root, 0, &objectid);
- if (ret < 0)
- return ret;
-
- ret = btrfs_insert_empty_inode(trans, root, path, objectid);
+ ret = btrfs_insert_empty_inode(trans, root, path, ino);
if (ret)
return ret;
BTRFS_INODE_PREALLOC | BTRFS_INODE_NODATASUM);
btrfs_set_inode_nlink(leaf, inode_item, 1);
btrfs_set_inode_transid(leaf, inode_item, trans->transid);
- btrfs_set_inode_block_group(leaf, inode_item,
- block_group->key.objectid);
+ btrfs_set_inode_block_group(leaf, inode_item, offset);
btrfs_mark_buffer_dirty(leaf);
btrfs_release_path(root, path);
key.objectid = BTRFS_FREE_SPACE_OBJECTID;
- key.offset = block_group->key.objectid;
+ key.offset = offset;
key.type = 0;
ret = btrfs_insert_empty_item(trans, root, path, &key,
return 0;
}
+ int create_free_space_inode(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_block_group_cache *block_group,
+ struct btrfs_path *path)
+ {
+ int ret;
+ u64 ino;
+
+ ret = btrfs_find_free_objectid(root, &ino);
+ if (ret < 0)
+ return ret;
+
+ return __create_free_space_inode(root, trans, path, ino,
+ block_group->key.objectid);
+ }
+
int btrfs_truncate_free_space_cache(struct btrfs_root *root,
struct btrfs_trans_handle *trans,
struct btrfs_path *path,
return ret;
}
- return btrfs_update_inode(trans, root, inode);
+ ret = btrfs_update_inode(trans, root, inode);
+ return ret;
}
static int readahead_cache(struct inode *inode)
return 0;
}
- int load_free_space_cache(struct btrfs_fs_info *fs_info,
- struct btrfs_block_group_cache *block_group)
+ int __load_free_space_cache(struct btrfs_root *root, struct inode *inode,
+ struct btrfs_free_space_ctl *ctl,
+ struct btrfs_path *path, u64 offset)
{
- struct btrfs_root *root = fs_info->tree_root;
- struct inode *inode;
struct btrfs_free_space_header *header;
struct extent_buffer *leaf;
struct page *page;
- struct btrfs_path *path;
u32 *checksums = NULL, *crc;
char *disk_crcs = NULL;
struct btrfs_key key;
u64 num_entries;
u64 num_bitmaps;
u64 generation;
- u64 used = btrfs_block_group_used(&block_group->item);
u32 cur_crc = ~(u32)0;
pgoff_t index = 0;
unsigned long first_page_offset;
int num_checksums;
- int ret = 0;
-
- /*
- * If we're unmounting then just return, since this does a search on the
- * normal root and not the commit root and we could deadlock.
- */
- smp_mb();
- if (fs_info->closing)
- return 0;
-
- /*
- * If this block group has been marked to be cleared for one reason or
- * another then we can't trust the on disk cache, so just return.
- */
- spin_lock(&block_group->lock);
- if (block_group->disk_cache_state != BTRFS_DC_WRITTEN) {
- spin_unlock(&block_group->lock);
- return 0;
- }
- spin_unlock(&block_group->lock);
+ int ret = 0, ret2;
INIT_LIST_HEAD(&bitmaps);
- path = btrfs_alloc_path();
- if (!path)
- return 0;
-
- inode = lookup_free_space_inode(root, block_group, path);
- if (IS_ERR(inode)) {
- btrfs_free_path(path);
- return 0;
- }
-
/* Nothing in the space cache, goodbye */
- if (!i_size_read(inode)) {
- btrfs_free_path(path);
+ if (!i_size_read(inode))
goto out;
- }
key.objectid = BTRFS_FREE_SPACE_OBJECTID;
- key.offset = block_group->key.objectid;
+ key.offset = offset;
key.type = 0;
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
- if (ret) {
- btrfs_free_path(path);
+ if (ret < 0)
+ goto out;
+ else if (ret > 0) {
+ btrfs_release_path(root, path);
+ ret = 0;
goto out;
}
+ ret = -1;
+
leaf = path->nodes[0];
header = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_free_space_header);
num_entries = btrfs_free_space_entries(leaf, header);
num_bitmaps = btrfs_free_space_bitmaps(leaf, header);
generation = btrfs_free_space_generation(leaf, header);
- btrfs_free_path(path);
+ btrfs_release_path(root, path);
if (BTRFS_I(inode)->generation != generation) {
printk(KERN_ERR "btrfs: free space inode generation (%llu) did"
- " not match free space cache generation (%llu) for "
- "block group %llu\n",
+ " not match free space cache generation (%llu)\n",
(unsigned long long)BTRFS_I(inode)->generation,
- (unsigned long long)generation,
- (unsigned long long)block_group->key.objectid);
- goto free_cache;
+ (unsigned long long)generation);
+ goto out;
}
if (!num_entries)
goto out;
ret = readahead_cache(inode);
- if (ret) {
- ret = 0;
+ if (ret)
goto out;
- }
while (1) {
struct btrfs_free_space_entry *entry;
}
page = grab_cache_page(inode->i_mapping, index);
- if (!page) {
- ret = 0;
+ if (!page)
goto free_cache;
- }
if (!PageUptodate(page)) {
btrfs_readpage(NULL, page);
unlock_page(page);
page_cache_release(page);
printk(KERN_ERR "btrfs: error reading free "
- "space cache: %llu\n",
- (unsigned long long)
- block_group->key.objectid);
+ "space cache\n");
goto free_cache;
}
}
gen = addr + (sizeof(u32) * num_checksums);
if (*gen != BTRFS_I(inode)->generation) {
printk(KERN_ERR "btrfs: space cache generation"
- " (%llu) does not match inode (%llu) "
- "for block group %llu\n",
+ " (%llu) does not match inode (%llu)\n",
(unsigned long long)*gen,
(unsigned long long)
- BTRFS_I(inode)->generation,
- (unsigned long long)
- block_group->key.objectid);
+ BTRFS_I(inode)->generation);
kunmap(page);
unlock_page(page);
page_cache_release(page);
PAGE_CACHE_SIZE - start_offset);
btrfs_csum_final(cur_crc, (char *)&cur_crc);
if (cur_crc != *crc) {
- printk(KERN_ERR "btrfs: crc mismatch for page %lu in "
- "block group %llu\n", index,
- (unsigned long long)block_group->key.objectid);
+ printk(KERN_ERR "btrfs: crc mismatch for page %lu\n",
+ index);
kunmap(page);
unlock_page(page);
page_cache_release(page);
}
if (entry->type == BTRFS_FREE_SPACE_EXTENT) {
- spin_lock(&block_group->tree_lock);
- ret = link_free_space(block_group, e);
- spin_unlock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
+ ret = link_free_space(ctl, e);
+ spin_unlock(&ctl->tree_lock);
BUG_ON(ret);
} else {
e->bitmap = kzalloc(PAGE_CACHE_SIZE, GFP_NOFS);
page_cache_release(page);
goto free_cache;
}
- spin_lock(&block_group->tree_lock);
- ret = link_free_space(block_group, e);
- block_group->total_bitmaps++;
- recalculate_thresholds(block_group);
- spin_unlock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
+ ret2 = link_free_space(ctl, e);
+ ctl->total_bitmaps++;
+ ctl->op->recalc_thresholds(ctl);
+ spin_unlock(&ctl->tree_lock);
list_add_tail(&e->list, &bitmaps);
}
index++;
}
- spin_lock(&block_group->tree_lock);
- if (block_group->free_space != (block_group->key.offset - used -
- block_group->bytes_super)) {
- spin_unlock(&block_group->tree_lock);
- printk(KERN_ERR "block group %llu has an wrong amount of free "
- "space\n", block_group->key.objectid);
- ret = 0;
- goto free_cache;
- }
- spin_unlock(&block_group->tree_lock);
-
ret = 1;
out:
kfree(checksums);
kfree(disk_crcs);
- iput(inode);
return ret;
-
free_cache:
- /* This cache is bogus, make sure it gets cleared */
+ __btrfs_remove_free_space_cache(ctl);
+ goto out;
+ }
+
+ int load_free_space_cache(struct btrfs_fs_info *fs_info,
+ struct btrfs_block_group_cache *block_group)
+ {
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
+ struct btrfs_root *root = fs_info->tree_root;
+ struct inode *inode;
+ struct btrfs_path *path;
+ int ret;
+ bool matched;
+ u64 used = btrfs_block_group_used(&block_group->item);
+
+ /*
+ * If we're unmounting then just return, since this does a search on the
+ * normal root and not the commit root and we could deadlock.
+ */
+ smp_mb();
+ if (fs_info->closing)
+ return 0;
+
+ /*
+ * If this block group has been marked to be cleared for one reason or
+ * another then we can't trust the on disk cache, so just return.
+ */
spin_lock(&block_group->lock);
- block_group->disk_cache_state = BTRFS_DC_CLEAR;
+ if (block_group->disk_cache_state != BTRFS_DC_WRITTEN) {
+ spin_unlock(&block_group->lock);
+ return 0;
+ }
spin_unlock(&block_group->lock);
- btrfs_remove_free_space_cache(block_group);
- goto out;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return 0;
+
+ inode = lookup_free_space_inode(root, block_group, path);
+ if (IS_ERR(inode)) {
+ btrfs_free_path(path);
+ return 0;
+ }
+
+ ret = __load_free_space_cache(fs_info->tree_root, inode, ctl,
+ path, block_group->key.objectid);
+ btrfs_free_path(path);
+ if (ret <= 0)
+ goto out;
+
+ spin_lock(&ctl->tree_lock);
+ matched = (ctl->free_space == (block_group->key.offset - used -
+ block_group->bytes_super));
+ spin_unlock(&ctl->tree_lock);
+
+ if (!matched) {
+ __btrfs_remove_free_space_cache(ctl);
+ printk(KERN_ERR "block group %llu has an wrong amount of free "
+ "space\n", block_group->key.objectid);
+ ret = -1;
+ }
+ out:
+ if (ret < 0) {
+ /* This cache is bogus, make sure it gets cleared */
+ spin_lock(&block_group->lock);
+ block_group->disk_cache_state = BTRFS_DC_CLEAR;
+ spin_unlock(&block_group->lock);
+ ret = 0;
+
+ printk(KERN_ERR "btrfs: failed to load free space cache "
+ "for block group %llu\n", block_group->key.objectid);
+ }
+
+ iput(inode);
+ return ret;
}
- int btrfs_write_out_cache(struct btrfs_root *root,
- struct btrfs_trans_handle *trans,
- struct btrfs_block_group_cache *block_group,
- struct btrfs_path *path)
+ int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
+ struct btrfs_free_space_ctl *ctl,
+ struct btrfs_block_group_cache *block_group,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_path *path, u64 offset)
{
struct btrfs_free_space_header *header;
struct extent_buffer *leaf;
- struct inode *inode;
struct rb_node *node;
struct list_head *pos, *n;
struct page **pages;
int index = 0, num_pages = 0;
int entries = 0;
int bitmaps = 0;
- int ret = 0;
+ int ret = -1;
bool next_page = false;
bool out_of_space = false;
- root = root->fs_info->tree_root;
-
INIT_LIST_HEAD(&bitmap_list);
- spin_lock(&block_group->lock);
- if (block_group->disk_cache_state < BTRFS_DC_SETUP) {
- spin_unlock(&block_group->lock);
- return 0;
- }
- spin_unlock(&block_group->lock);
-
- inode = lookup_free_space_inode(root, block_group, path);
- if (IS_ERR(inode))
+ node = rb_first(&ctl->free_space_offset);
+ if (!node)
return 0;
- if (!i_size_read(inode)) {
- iput(inode);
- return 0;
- }
-
- node = rb_first(&block_group->free_space_offset);
- if (!node) {
- iput(inode);
- return 0;
- }
+ if (!i_size_read(inode))
+ return -1;
num_pages = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
PAGE_CACHE_SHIFT;
/* We need a checksum per page. */
crc = checksums = kzalloc(sizeof(u32) * num_pages, GFP_NOFS);
- if (!crc) {
- iput(inode);
- return 0;
- }
+ if (!crc)
+ return -1;
pages = kzalloc(sizeof(struct page *) * num_pages, GFP_NOFS);
if (!pages) {
kfree(crc);
- iput(inode);
- return 0;
+ return -1;
}
/* Since the first page has all of our checksums and our generation we
first_page_offset = (sizeof(u32) * num_pages) + sizeof(u64);
/* Get the cluster for this block_group if it exists */
- if (!list_empty(&block_group->cluster_list))
+ if (block_group && !list_empty(&block_group->cluster_list))
cluster = list_entry(block_group->cluster_list.next,
struct btrfs_free_cluster,
block_group_list);
* When searching for pinned extents, we need to start at our start
* offset.
*/
- start = block_group->key.objectid;
+ if (block_group)
+ start = block_group->key.objectid;
/* Write out the extent entries */
do {
* We want to add any pinned extents to our free space cache
* so we don't leak the space
*/
- while (!next_page && (start < block_group->key.objectid +
- block_group->key.offset)) {
+ while (block_group && !next_page &&
+ (start < block_group->key.objectid +
+ block_group->key.offset)) {
ret = find_first_extent_bit(unpin, start, &start, &end,
EXTENT_DIRTY);
if (ret) {
filemap_write_and_wait(inode->i_mapping);
key.objectid = BTRFS_FREE_SPACE_OBJECTID;
- key.offset = block_group->key.objectid;
+ key.offset = offset;
key.type = 0;
ret = btrfs_search_slot(trans, root, &key, path, 1, 1);
if (ret < 0) {
- ret = 0;
+ ret = -1;
clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, bytes - 1,
EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_DO_ACCOUNTING, 0, 0, NULL, GFP_NOFS);
path->slots[0]--;
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
if (found_key.objectid != BTRFS_FREE_SPACE_OBJECTID ||
- found_key.offset != block_group->key.objectid) {
- ret = 0;
+ found_key.offset != offset) {
+ ret = -1;
clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, bytes - 1,
EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_DO_ACCOUNTING, 0, 0, NULL,
ret = 1;
out_free:
- if (ret == 0) {
+ if (ret != 1) {
invalidate_inode_pages2_range(inode->i_mapping, 0, index);
- spin_lock(&block_group->lock);
- block_group->disk_cache_state = BTRFS_DC_ERROR;
- spin_unlock(&block_group->lock);
BTRFS_I(inode)->generation = 0;
}
kfree(checksums);
kfree(pages);
btrfs_update_inode(trans, root, inode);
+ return ret;
+ }
+
+ int btrfs_write_out_cache(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_block_group_cache *block_group,
+ struct btrfs_path *path)
+ {
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
+ struct inode *inode;
+ int ret = 0;
+
+ root = root->fs_info->tree_root;
+
+ spin_lock(&block_group->lock);
+ if (block_group->disk_cache_state < BTRFS_DC_SETUP) {
+ spin_unlock(&block_group->lock);
+ return 0;
+ }
+ spin_unlock(&block_group->lock);
+
+ inode = lookup_free_space_inode(root, block_group, path);
+ if (IS_ERR(inode))
+ return 0;
+
+ ret = __btrfs_write_out_cache(root, inode, ctl, block_group, trans,
+ path, block_group->key.objectid);
+ if (ret < 0) {
+ spin_lock(&block_group->lock);
+ block_group->disk_cache_state = BTRFS_DC_ERROR;
+ spin_unlock(&block_group->lock);
+ ret = 0;
+
+ printk(KERN_ERR "btrfs: failed to write free space cace "
+ "for block group %llu\n", block_group->key.objectid);
+ }
+
iput(inode);
return ret;
}
- static inline unsigned long offset_to_bit(u64 bitmap_start, u64 sectorsize,
+ static inline unsigned long offset_to_bit(u64 bitmap_start, u32 unit,
u64 offset)
{
BUG_ON(offset < bitmap_start);
offset -= bitmap_start;
- return (unsigned long)(div64_u64(offset, sectorsize));
+ return (unsigned long)(div_u64(offset, unit));
}
- static inline unsigned long bytes_to_bits(u64 bytes, u64 sectorsize)
+ static inline unsigned long bytes_to_bits(u64 bytes, u32 unit)
{
- return (unsigned long)(div64_u64(bytes, sectorsize));
+ return (unsigned long)(div_u64(bytes, unit));
}
- static inline u64 offset_to_bitmap(struct btrfs_block_group_cache *block_group,
+ static inline u64 offset_to_bitmap(struct btrfs_free_space_ctl *ctl,
u64 offset)
{
u64 bitmap_start;
u64 bytes_per_bitmap;
- bytes_per_bitmap = BITS_PER_BITMAP * block_group->sectorsize;
- bitmap_start = offset - block_group->key.objectid;
+ bytes_per_bitmap = BITS_PER_BITMAP * ctl->unit;
+ bitmap_start = offset - ctl->start;
bitmap_start = div64_u64(bitmap_start, bytes_per_bitmap);
bitmap_start *= bytes_per_bitmap;
- bitmap_start += block_group->key.objectid;
+ bitmap_start += ctl->start;
return bitmap_start;
}
* offset.
*/
static struct btrfs_free_space *
- tree_search_offset(struct btrfs_block_group_cache *block_group,
+ tree_search_offset(struct btrfs_free_space_ctl *ctl,
u64 offset, int bitmap_only, int fuzzy)
{
- struct rb_node *n = block_group->free_space_offset.rb_node;
+ struct rb_node *n = ctl->free_space_offset.rb_node;
struct btrfs_free_space *entry, *prev = NULL;
/* find entry that is closest to the 'offset' */
break;
}
}
- if (entry->offset + BITS_PER_BITMAP *
- block_group->sectorsize > offset)
+ if (entry->offset + BITS_PER_BITMAP * ctl->unit > offset)
return entry;
} else if (entry->offset + entry->bytes > offset)
return entry;
while (1) {
if (entry->bitmap) {
if (entry->offset + BITS_PER_BITMAP *
- block_group->sectorsize > offset)
+ ctl->unit > offset)
break;
} else {
if (entry->offset + entry->bytes > offset)
}
static inline void
- __unlink_free_space(struct btrfs_block_group_cache *block_group,
+ __unlink_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info)
{
- rb_erase(&info->offset_index, &block_group->free_space_offset);
- block_group->free_extents--;
+ rb_erase(&info->offset_index, &ctl->free_space_offset);
+ ctl->free_extents--;
}
- static void unlink_free_space(struct btrfs_block_group_cache *block_group,
+ static void unlink_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info)
{
- __unlink_free_space(block_group, info);
- block_group->free_space -= info->bytes;
+ __unlink_free_space(ctl, info);
+ ctl->free_space -= info->bytes;
}
- static int link_free_space(struct btrfs_block_group_cache *block_group,
+ static int link_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info)
{
int ret = 0;
BUG_ON(!info->bitmap && !info->bytes);
- ret = tree_insert_offset(&block_group->free_space_offset, info->offset,
+ ret = tree_insert_offset(&ctl->free_space_offset, info->offset,
&info->offset_index, (info->bitmap != NULL));
if (ret)
return ret;
- block_group->free_space += info->bytes;
- block_group->free_extents++;
+ ctl->free_space += info->bytes;
+ ctl->free_extents++;
return ret;
}
- static void recalculate_thresholds(struct btrfs_block_group_cache *block_group)
+ static void recalculate_thresholds(struct btrfs_free_space_ctl *ctl)
{
+ struct btrfs_block_group_cache *block_group = ctl->private;
u64 max_bytes;
u64 bitmap_bytes;
u64 extent_bytes;
u64 size = block_group->key.offset;
+ u64 bytes_per_bg = BITS_PER_BITMAP * block_group->sectorsize;
+ int max_bitmaps = div64_u64(size + bytes_per_bg - 1, bytes_per_bg);
+
+ BUG_ON(ctl->total_bitmaps > max_bitmaps);
/*
* The goal is to keep the total amount of memory used per 1gb of space
* sure we don't go over our overall goal of MAX_CACHE_BYTES_PER_GIG as
* we add more bitmaps.
*/
- bitmap_bytes = (block_group->total_bitmaps + 1) * PAGE_CACHE_SIZE;
+ bitmap_bytes = (ctl->total_bitmaps + 1) * PAGE_CACHE_SIZE;
if (bitmap_bytes >= max_bytes) {
- block_group->extents_thresh = 0;
+ ctl->extents_thresh = 0;
return;
}
extent_bytes = max_bytes - bitmap_bytes;
extent_bytes = min_t(u64, extent_bytes, div64_u64(max_bytes, 2));
- block_group->extents_thresh =
+ ctl->extents_thresh =
div64_u64(extent_bytes, (sizeof(struct btrfs_free_space)));
}
- static void bitmap_clear_bits(struct btrfs_block_group_cache *block_group,
+ static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, u64 offset,
u64 bytes)
{
- unsigned long start, end;
- unsigned long i;
+ unsigned long start, count;
- start = offset_to_bit(info->offset, block_group->sectorsize, offset);
- end = start + bytes_to_bits(bytes, block_group->sectorsize);
- BUG_ON(end > BITS_PER_BITMAP);
+ start = offset_to_bit(info->offset, ctl->unit, offset);
+ count = bytes_to_bits(bytes, ctl->unit);
+ BUG_ON(start + count > BITS_PER_BITMAP);
- for (i = start; i < end; i++)
- clear_bit(i, info->bitmap);
+ bitmap_clear(info->bitmap, start, count);
info->bytes -= bytes;
- block_group->free_space -= bytes;
+ ctl->free_space -= bytes;
}
- static void bitmap_set_bits(struct btrfs_block_group_cache *block_group,
+ static void bitmap_set_bits(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, u64 offset,
u64 bytes)
{
- unsigned long start, end;
- unsigned long i;
+ unsigned long start, count;
- start = offset_to_bit(info->offset, block_group->sectorsize, offset);
- end = start + bytes_to_bits(bytes, block_group->sectorsize);
- BUG_ON(end > BITS_PER_BITMAP);
+ start = offset_to_bit(info->offset, ctl->unit, offset);
+ count = bytes_to_bits(bytes, ctl->unit);
+ BUG_ON(start + count > BITS_PER_BITMAP);
- for (i = start; i < end; i++)
- set_bit(i, info->bitmap);
+ bitmap_set(info->bitmap, start, count);
info->bytes += bytes;
- block_group->free_space += bytes;
+ ctl->free_space += bytes;
}
- static int search_bitmap(struct btrfs_block_group_cache *block_group,
+ static int search_bitmap(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *bitmap_info, u64 *offset,
u64 *bytes)
{
unsigned long bits, i;
unsigned long next_zero;
- i = offset_to_bit(bitmap_info->offset, block_group->sectorsize,
+ i = offset_to_bit(bitmap_info->offset, ctl->unit,
max_t(u64, *offset, bitmap_info->offset));
- bits = bytes_to_bits(*bytes, block_group->sectorsize);
+ bits = bytes_to_bits(*bytes, ctl->unit);
for (i = find_next_bit(bitmap_info->bitmap, BITS_PER_BITMAP, i);
i < BITS_PER_BITMAP;
}
if (found_bits) {
- *offset = (u64)(i * block_group->sectorsize) +
- bitmap_info->offset;
- *bytes = (u64)(found_bits) * block_group->sectorsize;
+ *offset = (u64)(i * ctl->unit) + bitmap_info->offset;
+ *bytes = (u64)(found_bits) * ctl->unit;
return 0;
}
return -1;
}
- static struct btrfs_free_space *find_free_space(struct btrfs_block_group_cache
- *block_group, u64 *offset,
- u64 *bytes, int debug)
+ static struct btrfs_free_space *
+ find_free_space(struct btrfs_free_space_ctl *ctl, u64 *offset, u64 *bytes)
{
struct btrfs_free_space *entry;
struct rb_node *node;
int ret;
- if (!block_group->free_space_offset.rb_node)
+ if (!ctl->free_space_offset.rb_node)
return NULL;
- entry = tree_search_offset(block_group,
- offset_to_bitmap(block_group, *offset),
- 0, 1);
+ entry = tree_search_offset(ctl, offset_to_bitmap(ctl, *offset), 0, 1);
if (!entry)
return NULL;
continue;
if (entry->bitmap) {
- ret = search_bitmap(block_group, entry, offset, bytes);
+ ret = search_bitmap(ctl, entry, offset, bytes);
if (!ret)
return entry;
continue;
return NULL;
}
- static void add_new_bitmap(struct btrfs_block_group_cache *block_group,
+ static void add_new_bitmap(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, u64 offset)
{
- u64 bytes_per_bg = BITS_PER_BITMAP * block_group->sectorsize;
- int max_bitmaps = (int)div64_u64(block_group->key.offset +
- bytes_per_bg - 1, bytes_per_bg);
- BUG_ON(block_group->total_bitmaps >= max_bitmaps);
-
- info->offset = offset_to_bitmap(block_group, offset);
+ info->offset = offset_to_bitmap(ctl, offset);
info->bytes = 0;
- link_free_space(block_group, info);
- block_group->total_bitmaps++;
+ link_free_space(ctl, info);
+ ctl->total_bitmaps++;
- recalculate_thresholds(block_group);
+ ctl->op->recalc_thresholds(ctl);
}
- static void free_bitmap(struct btrfs_block_group_cache *block_group,
+ static void free_bitmap(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *bitmap_info)
{
- unlink_free_space(block_group, bitmap_info);
+ unlink_free_space(ctl, bitmap_info);
kfree(bitmap_info->bitmap);
kmem_cache_free(btrfs_free_space_cachep, bitmap_info);
- block_group->total_bitmaps--;
- recalculate_thresholds(block_group);
+ ctl->total_bitmaps--;
+ ctl->op->recalc_thresholds(ctl);
}
- static noinline int remove_from_bitmap(struct btrfs_block_group_cache *block_group,
+ static noinline int remove_from_bitmap(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *bitmap_info,
u64 *offset, u64 *bytes)
{
int ret;
again:
- end = bitmap_info->offset +
- (u64)(BITS_PER_BITMAP * block_group->sectorsize) - 1;
+ end = bitmap_info->offset + (u64)(BITS_PER_BITMAP * ctl->unit) - 1;
/*
* XXX - this can go away after a few releases.
search_start = *offset;
search_bytes = *bytes;
search_bytes = min(search_bytes, end - search_start + 1);
- ret = search_bitmap(block_group, bitmap_info, &search_start,
- &search_bytes);
+ ret = search_bitmap(ctl, bitmap_info, &search_start, &search_bytes);
BUG_ON(ret < 0 || search_start != *offset);
if (*offset > bitmap_info->offset && *offset + *bytes > end) {
- bitmap_clear_bits(block_group, bitmap_info, *offset,
- end - *offset + 1);
+ bitmap_clear_bits(ctl, bitmap_info, *offset, end - *offset + 1);
*bytes -= end - *offset + 1;
*offset = end + 1;
} else if (*offset >= bitmap_info->offset && *offset + *bytes <= end) {
- bitmap_clear_bits(block_group, bitmap_info, *offset, *bytes);
+ bitmap_clear_bits(ctl, bitmap_info, *offset, *bytes);
*bytes = 0;
}
if (*bytes) {
struct rb_node *next = rb_next(&bitmap_info->offset_index);
if (!bitmap_info->bytes)
- free_bitmap(block_group, bitmap_info);
+ free_bitmap(ctl, bitmap_info);
/*
* no entry after this bitmap, but we still have bytes to
*/
search_start = *offset;
search_bytes = *bytes;
- ret = search_bitmap(block_group, bitmap_info, &search_start,
+ ret = search_bitmap(ctl, bitmap_info, &search_start,
&search_bytes);
if (ret < 0 || search_start != *offset)
return -EAGAIN;
goto again;
} else if (!bitmap_info->bytes)
- free_bitmap(block_group, bitmap_info);
+ free_bitmap(ctl, bitmap_info);
return 0;
}
- static int insert_into_bitmap(struct btrfs_block_group_cache *block_group,
- struct btrfs_free_space *info)
+ static bool use_bitmap(struct btrfs_free_space_ctl *ctl,
+ struct btrfs_free_space *info)
{
- struct btrfs_free_space *bitmap_info;
- int added = 0;
- u64 bytes, offset, end;
- int ret;
+ struct btrfs_block_group_cache *block_group = ctl->private;
/*
* If we are below the extents threshold then we can add this as an
* extent, and don't have to deal with the bitmap
*/
- if (block_group->free_extents < block_group->extents_thresh) {
+ if (ctl->free_extents < ctl->extents_thresh) {
/*
* If this block group has some small extents we don't want to
* use up all of our free slots in the cache with them, we want
* the overhead of a bitmap if we don't have to.
*/
if (info->bytes <= block_group->sectorsize * 4) {
- if (block_group->free_extents * 2 <=
- block_group->extents_thresh)
- return 0;
+ if (ctl->free_extents * 2 <= ctl->extents_thresh)
+ return false;
} else {
- return 0;
+ return false;
}
}
*/
if (BITS_PER_BITMAP * block_group->sectorsize >
block_group->key.offset)
- return 0;
+ return false;
+
+ return true;
+ }
+
+ static int insert_into_bitmap(struct btrfs_free_space_ctl *ctl,
+ struct btrfs_free_space *info)
+ {
+ struct btrfs_free_space *bitmap_info;
+ int added = 0;
+ u64 bytes, offset, end;
+ int ret;
bytes = info->bytes;
offset = info->offset;
+ if (!ctl->op->use_bitmap(ctl, info))
+ return 0;
+
again:
- bitmap_info = tree_search_offset(block_group,
- offset_to_bitmap(block_group, offset),
+ bitmap_info = tree_search_offset(ctl, offset_to_bitmap(ctl, offset),
1, 0);
if (!bitmap_info) {
BUG_ON(added);
goto new_bitmap;
}
- end = bitmap_info->offset +
- (u64)(BITS_PER_BITMAP * block_group->sectorsize);
+ end = bitmap_info->offset + (u64)(BITS_PER_BITMAP * ctl->unit);
if (offset >= bitmap_info->offset && offset + bytes > end) {
- bitmap_set_bits(block_group, bitmap_info, offset,
- end - offset);
+ bitmap_set_bits(ctl, bitmap_info, offset, end - offset);
bytes -= end - offset;
offset = end;
added = 0;
} else if (offset >= bitmap_info->offset && offset + bytes <= end) {
- bitmap_set_bits(block_group, bitmap_info, offset, bytes);
+ bitmap_set_bits(ctl, bitmap_info, offset, bytes);
bytes = 0;
} else {
BUG();
new_bitmap:
if (info && info->bitmap) {
- add_new_bitmap(block_group, info, offset);
+ add_new_bitmap(ctl, info, offset);
added = 1;
info = NULL;
goto again;
} else {
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
/* no pre-allocated info, allocate a new one */
if (!info) {
info = kmem_cache_zalloc(btrfs_free_space_cachep,
GFP_NOFS);
if (!info) {
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
ret = -ENOMEM;
goto out;
}
/* allocate the bitmap */
info->bitmap = kzalloc(PAGE_CACHE_SIZE, GFP_NOFS);
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
if (!info->bitmap) {
ret = -ENOMEM;
goto out;
return ret;
}
- bool try_merge_free_space(struct btrfs_block_group_cache *block_group,
+ bool try_merge_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, bool update_stat)
{
struct btrfs_free_space *left_info;
* are adding, if there is remove that struct and add a new one to
* cover the entire range
*/
- right_info = tree_search_offset(block_group, offset + bytes, 0, 0);
+ right_info = tree_search_offset(ctl, offset + bytes, 0, 0);
if (right_info && rb_prev(&right_info->offset_index))
left_info = rb_entry(rb_prev(&right_info->offset_index),
struct btrfs_free_space, offset_index);
else
- left_info = tree_search_offset(block_group, offset - 1, 0, 0);
+ left_info = tree_search_offset(ctl, offset - 1, 0, 0);
if (right_info && !right_info->bitmap) {
if (update_stat)
- unlink_free_space(block_group, right_info);
+ unlink_free_space(ctl, right_info);
else
- __unlink_free_space(block_group, right_info);
+ __unlink_free_space(ctl, right_info);
info->bytes += right_info->bytes;
kmem_cache_free(btrfs_free_space_cachep, right_info);
merged = true;
if (left_info && !left_info->bitmap &&
left_info->offset + left_info->bytes == offset) {
if (update_stat)
- unlink_free_space(block_group, left_info);
+ unlink_free_space(ctl, left_info);
else
- __unlink_free_space(block_group, left_info);
+ __unlink_free_space(ctl, left_info);
info->offset = left_info->offset;
info->bytes += left_info->bytes;
kmem_cache_free(btrfs_free_space_cachep, left_info);
return merged;
}
- int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
- u64 offset, u64 bytes)
+ int __btrfs_add_free_space(struct btrfs_free_space_ctl *ctl,
+ u64 offset, u64 bytes)
{
struct btrfs_free_space *info;
int ret = 0;
info->offset = offset;
info->bytes = bytes;
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
- if (try_merge_free_space(block_group, info, true))
+ if (try_merge_free_space(ctl, info, true))
goto link;
/*
* extent then we know we're going to have to allocate a new extent, so
* before we do that see if we need to drop this into a bitmap
*/
- ret = insert_into_bitmap(block_group, info);
+ ret = insert_into_bitmap(ctl, info);
if (ret < 0) {
goto out;
} else if (ret) {
goto out;
}
link:
- ret = link_free_space(block_group, info);
+ ret = link_free_space(ctl, info);
if (ret)
kmem_cache_free(btrfs_free_space_cachep, info);
out:
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
if (ret) {
printk(KERN_CRIT "btrfs: unable to add free space :%d\n", ret);
int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
u64 offset, u64 bytes)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *info;
struct btrfs_free_space *next_info = NULL;
int ret = 0;
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
again:
- info = tree_search_offset(block_group, offset, 0, 0);
+ info = tree_search_offset(ctl, offset, 0, 0);
if (!info) {
/*
* oops didn't find an extent that matched the space we wanted
* to remove, look for a bitmap instead
*/
- info = tree_search_offset(block_group,
- offset_to_bitmap(block_group, offset),
+ info = tree_search_offset(ctl, offset_to_bitmap(ctl, offset),
1, 0);
if (!info) {
WARN_ON(1);
offset_index);
if (next_info->bitmap)
- end = next_info->offset + BITS_PER_BITMAP *
- block_group->sectorsize - 1;
+ end = next_info->offset +
+ BITS_PER_BITMAP * ctl->unit - 1;
else
end = next_info->offset + next_info->bytes;
}
if (info->bytes == bytes) {
- unlink_free_space(block_group, info);
+ unlink_free_space(ctl, info);
if (info->bitmap) {
kfree(info->bitmap);
- block_group->total_bitmaps--;
+ ctl->total_bitmaps--;
}
kmem_cache_free(btrfs_free_space_cachep, info);
goto out_lock;
}
if (!info->bitmap && info->offset == offset) {
- unlink_free_space(block_group, info);
+ unlink_free_space(ctl, info);
info->offset += bytes;
info->bytes -= bytes;
- link_free_space(block_group, info);
+ link_free_space(ctl, info);
goto out_lock;
}
* first unlink the old info and then
* insert it again after the hole we're creating
*/
- unlink_free_space(block_group, info);
+ unlink_free_space(ctl, info);
if (offset + bytes < info->offset + info->bytes) {
u64 old_end = info->offset + info->bytes;
info->offset = offset + bytes;
info->bytes = old_end - info->offset;
- ret = link_free_space(block_group, info);
+ ret = link_free_space(ctl, info);
WARN_ON(ret);
if (ret)
goto out_lock;
*/
kmem_cache_free(btrfs_free_space_cachep, info);
}
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
/* step two, insert a new info struct to cover
* anything before the hole
goto out;
}
- ret = remove_from_bitmap(block_group, info, &offset, &bytes);
+ ret = remove_from_bitmap(ctl, info, &offset, &bytes);
if (ret == -EAGAIN)
goto again;
BUG_ON(ret);
out_lock:
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
out:
return ret;
}
void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
u64 bytes)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *info;
struct rb_node *n;
int count = 0;
- for (n = rb_first(&block_group->free_space_offset); n; n = rb_next(n)) {
+ for (n = rb_first(&ctl->free_space_offset); n; n = rb_next(n)) {
info = rb_entry(n, struct btrfs_free_space, offset_index);
if (info->bytes >= bytes)
count++;
"\n", count);
}
- u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group)
+ static struct btrfs_free_space_op free_space_op = {
+ .recalc_thresholds = recalculate_thresholds,
+ .use_bitmap = use_bitmap,
+ };
+
+ void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group)
{
- struct btrfs_free_space *info;
- struct rb_node *n;
- u64 ret = 0;
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
- for (n = rb_first(&block_group->free_space_offset); n;
- n = rb_next(n)) {
- info = rb_entry(n, struct btrfs_free_space, offset_index);
- ret += info->bytes;
- }
+ spin_lock_init(&ctl->tree_lock);
+ ctl->unit = block_group->sectorsize;
+ ctl->start = block_group->key.objectid;
+ ctl->private = block_group;
+ ctl->op = &free_space_op;
- return ret;
+ /*
+ * we only want to have 32k of ram per block group for keeping
+ * track of free space, and if we pass 1/2 of that we want to
+ * start converting things over to using bitmaps
+ */
+ ctl->extents_thresh = ((1024 * 32) / 2) /
+ sizeof(struct btrfs_free_space);
}
/*
struct btrfs_block_group_cache *block_group,
struct btrfs_free_cluster *cluster)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *entry;
struct rb_node *node;
bitmap = (entry->bitmap != NULL);
if (!bitmap)
- try_merge_free_space(block_group, entry, false);
- tree_insert_offset(&block_group->free_space_offset,
+ try_merge_free_space(ctl, entry, false);
+ tree_insert_offset(&ctl->free_space_offset,
entry->offset, &entry->offset_index, bitmap);
}
cluster->root = RB_ROOT;
return 0;
}
- void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
-void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl)
++void __btrfs_remove_free_space_cache_locked(struct btrfs_free_space_ctl *ctl)
{
struct btrfs_free_space *info;
struct rb_node *node;
- spin_lock(&ctl->tree_lock);
+
+ while ((node = rb_last(&ctl->free_space_offset)) != NULL) {
+ info = rb_entry(node, struct btrfs_free_space, offset_index);
+ unlink_free_space(ctl, info);
+ kfree(info->bitmap);
+ kmem_cache_free(btrfs_free_space_cachep, info);
+ if (need_resched()) {
+ spin_unlock(&ctl->tree_lock);
+ cond_resched();
+ spin_lock(&ctl->tree_lock);
+ }
+ }
++}
++
++void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl)
++{
++ spin_lock(&ctl->tree_lock);
++ __btrfs_remove_free_space_cache_locked(ctl);
+ spin_unlock(&ctl->tree_lock);
+ }
+
+ void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
+ {
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_cluster *cluster;
struct list_head *head;
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
while ((head = block_group->cluster_list.next) !=
&block_group->cluster_list) {
cluster = list_entry(head, struct btrfs_free_cluster,
WARN_ON(cluster->block_group != block_group);
__btrfs_return_cluster_to_free_space(block_group, cluster);
if (need_resched()) {
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
cond_resched();
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
}
}
++ __btrfs_remove_free_space_cache_locked(ctl);
+ spin_unlock(&ctl->tree_lock);
- while ((node = rb_last(&block_group->free_space_offset)) != NULL) {
- info = rb_entry(node, struct btrfs_free_space, offset_index);
- if (!info->bitmap) {
- unlink_free_space(block_group, info);
- kmem_cache_free(btrfs_free_space_cachep, info);
- } else {
- free_bitmap(block_group, info);
- }
-
- if (need_resched()) {
- spin_unlock(&block_group->tree_lock);
- cond_resched();
- spin_lock(&block_group->tree_lock);
- }
- }
-
- spin_unlock(&block_group->tree_lock);
- __btrfs_remove_free_space_cache(ctl);
}
u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
u64 offset, u64 bytes, u64 empty_size)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *entry = NULL;
u64 bytes_search = bytes + empty_size;
u64 ret = 0;
- spin_lock(&block_group->tree_lock);
- entry = find_free_space(block_group, &offset, &bytes_search, 0);
+ spin_lock(&ctl->tree_lock);
+ entry = find_free_space(ctl, &offset, &bytes_search);
if (!entry)
goto out;
ret = offset;
if (entry->bitmap) {
- bitmap_clear_bits(block_group, entry, offset, bytes);
+ bitmap_clear_bits(ctl, entry, offset, bytes);
if (!entry->bytes)
- free_bitmap(block_group, entry);
+ free_bitmap(ctl, entry);
} else {
- unlink_free_space(block_group, entry);
+ unlink_free_space(ctl, entry);
entry->offset += bytes;
entry->bytes -= bytes;
if (!entry->bytes)
kmem_cache_free(btrfs_free_space_cachep, entry);
else
- link_free_space(block_group, entry);
+ link_free_space(ctl, entry);
}
out:
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
return ret;
}
struct btrfs_block_group_cache *block_group,
struct btrfs_free_cluster *cluster)
{
+ struct btrfs_free_space_ctl *ctl;
int ret;
/* first, get a safe pointer to the block group */
atomic_inc(&block_group->count);
spin_unlock(&cluster->lock);
+ ctl = block_group->free_space_ctl;
+
/* now return any extents the cluster had on it */
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
ret = __btrfs_return_cluster_to_free_space(block_group, cluster);
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
/* finally drop our ref */
btrfs_put_block_group(block_group);
struct btrfs_free_space *entry,
u64 bytes, u64 min_start)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
int err;
u64 search_start = cluster->window_start;
u64 search_bytes = bytes;
search_start = min_start;
search_bytes = bytes;
- err = search_bitmap(block_group, entry, &search_start,
- &search_bytes);
+ err = search_bitmap(ctl, entry, &search_start, &search_bytes);
if (err)
return 0;
ret = search_start;
- bitmap_clear_bits(block_group, entry, ret, bytes);
+ bitmap_clear_bits(ctl, entry, ret, bytes);
return ret;
}
struct btrfs_free_cluster *cluster, u64 bytes,
u64 min_start)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *entry = NULL;
struct rb_node *node;
u64 ret = 0;
if (!ret)
return 0;
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
- block_group->free_space -= bytes;
+ ctl->free_space -= bytes;
if (entry->bytes == 0) {
- block_group->free_extents--;
+ ctl->free_extents--;
if (entry->bitmap) {
kfree(entry->bitmap);
- block_group->total_bitmaps--;
- recalculate_thresholds(block_group);
+ ctl->total_bitmaps--;
+ ctl->op->recalc_thresholds(ctl);
}
kmem_cache_free(btrfs_free_space_cachep, entry);
}
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
return ret;
}
struct btrfs_free_cluster *cluster,
u64 offset, u64 bytes, u64 min_bytes)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
unsigned long next_zero;
unsigned long i;
unsigned long search_bits;
cluster->window_start = start * block_group->sectorsize +
entry->offset;
- rb_erase(&entry->offset_index, &block_group->free_space_offset);
+ rb_erase(&entry->offset_index, &ctl->free_space_offset);
ret = tree_insert_offset(&cluster->root, entry->offset,
&entry->offset_index, 1);
BUG_ON(ret);
struct btrfs_free_cluster *cluster,
u64 offset, u64 bytes, u64 min_bytes)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *first = NULL;
struct btrfs_free_space *entry = NULL;
struct btrfs_free_space *prev = NULL;
u64 max_extent;
u64 max_gap = 128 * 1024;
- entry = tree_search_offset(block_group, offset, 0, 1);
+ entry = tree_search_offset(ctl, offset, 0, 1);
if (!entry)
return -ENOSPC;
if (entry->bitmap)
continue;
- rb_erase(&entry->offset_index, &block_group->free_space_offset);
+ rb_erase(&entry->offset_index, &ctl->free_space_offset);
ret = tree_insert_offset(&cluster->root, entry->offset,
&entry->offset_index, 0);
BUG_ON(ret);
struct btrfs_free_cluster *cluster,
u64 offset, u64 bytes, u64 min_bytes)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *entry;
struct rb_node *node;
int ret = -ENOSPC;
- if (block_group->total_bitmaps == 0)
+ if (ctl->total_bitmaps == 0)
return -ENOSPC;
- entry = tree_search_offset(block_group,
- offset_to_bitmap(block_group, offset),
- 0, 1);
+ entry = tree_search_offset(ctl, offset_to_bitmap(ctl, offset), 0, 1);
if (!entry)
return -ENOSPC;
struct btrfs_free_cluster *cluster,
u64 offset, u64 bytes, u64 empty_size)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
u64 min_bytes;
int ret;
} else
min_bytes = max(bytes, (bytes + empty_size) >> 2);
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
/*
* If we know we don't have enough space to make a cluster don't even
* bother doing all the work to try and find one.
*/
- if (block_group->free_space < min_bytes) {
- spin_unlock(&block_group->tree_lock);
+ if (ctl->free_space < min_bytes) {
+ spin_unlock(&ctl->tree_lock);
return -ENOSPC;
}
}
out:
spin_unlock(&cluster->lock);
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
return ret;
}
int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
u64 *trimmed, u64 start, u64 end, u64 minlen)
{
+ struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct btrfs_free_space *entry = NULL;
struct btrfs_fs_info *fs_info = block_group->fs_info;
u64 bytes = 0;
*trimmed = 0;
while (start < end) {
- spin_lock(&block_group->tree_lock);
+ spin_lock(&ctl->tree_lock);
- if (block_group->free_space < minlen) {
- spin_unlock(&block_group->tree_lock);
+ if (ctl->free_space < minlen) {
+ spin_unlock(&ctl->tree_lock);
break;
}
- entry = tree_search_offset(block_group, start, 0, 1);
+ entry = tree_search_offset(ctl, start, 0, 1);
if (!entry)
- entry = tree_search_offset(block_group,
- offset_to_bitmap(block_group,
- start),
+ entry = tree_search_offset(ctl,
+ offset_to_bitmap(ctl, start),
1, 1);
if (!entry || entry->offset >= end) {
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
break;
}
if (entry->bitmap) {
- ret = search_bitmap(block_group, entry, &start, &bytes);
+ ret = search_bitmap(ctl, entry, &start, &bytes);
if (!ret) {
if (start >= end) {
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
break;
}
bytes = min(bytes, end - start);
- bitmap_clear_bits(block_group, entry,
- start, bytes);
+ bitmap_clear_bits(ctl, entry, start, bytes);
if (entry->bytes == 0)
- free_bitmap(block_group, entry);
+ free_bitmap(ctl, entry);
} else {
start = entry->offset + BITS_PER_BITMAP *
block_group->sectorsize;
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
ret = 0;
continue;
}
} else {
start = entry->offset;
bytes = min(entry->bytes, end - start);
- unlink_free_space(block_group, entry);
+ unlink_free_space(ctl, entry);
- kfree(entry);
+ kmem_cache_free(btrfs_free_space_cachep, entry);
}
- spin_unlock(&block_group->tree_lock);
+ spin_unlock(&ctl->tree_lock);
if (bytes >= minlen) {
int update_ret;
bytes,
&actually_trimmed);
- btrfs_add_free_space(block_group,
- start, bytes);
+ btrfs_add_free_space(block_group, start, bytes);
if (!update_ret)
btrfs_update_reserved_bytes(block_group,
bytes, 0, 1);
return ret;
}
+
+ /*
+ * Find the left-most item in the cache tree, and then return the
+ * smallest inode number in the item.
+ *
+ * Note: the returned inode number may not be the smallest one in
+ * the tree, if the left-most item is a bitmap.
+ */
+ u64 btrfs_find_ino_for_alloc(struct btrfs_root *fs_root)
+ {
+ struct btrfs_free_space_ctl *ctl = fs_root->free_ino_ctl;
+ struct btrfs_free_space *entry = NULL;
+ u64 ino = 0;
+
+ spin_lock(&ctl->tree_lock);
+
+ if (RB_EMPTY_ROOT(&ctl->free_space_offset))
+ goto out;
+
+ entry = rb_entry(rb_first(&ctl->free_space_offset),
+ struct btrfs_free_space, offset_index);
+
+ if (!entry->bitmap) {
+ ino = entry->offset;
+
+ unlink_free_space(ctl, entry);
+ entry->offset++;
+ entry->bytes--;
+ if (!entry->bytes)
+ kmem_cache_free(btrfs_free_space_cachep, entry);
+ else
+ link_free_space(ctl, entry);
+ } else {
+ u64 offset = 0;
+ u64 count = 1;
+ int ret;
+
+ ret = search_bitmap(ctl, entry, &offset, &count);
+ BUG_ON(ret);
+
+ ino = offset;
+ bitmap_clear_bits(ctl, entry, offset, 1);
+ if (entry->bytes == 0)
+ free_bitmap(ctl, entry);
+ }
+ out:
+ spin_unlock(&ctl->tree_lock);
+
+ return ino;
+ }
+
+ struct inode *lookup_free_ino_inode(struct btrfs_root *root,
+ struct btrfs_path *path)
+ {
+ struct inode *inode = NULL;
+
+ spin_lock(&root->cache_lock);
+ if (root->cache_inode)
+ inode = igrab(root->cache_inode);
+ spin_unlock(&root->cache_lock);
+ if (inode)
+ return inode;
+
+ inode = __lookup_free_space_inode(root, path, 0);
+ if (IS_ERR(inode))
+ return inode;
+
+ spin_lock(&root->cache_lock);
+ if (!root->fs_info->closing)
+ root->cache_inode = igrab(inode);
+ spin_unlock(&root->cache_lock);
+
+ return inode;
+ }
+
+ int create_free_ino_inode(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_path *path)
+ {
+ return __create_free_space_inode(root, trans, path,
+ BTRFS_FREE_INO_OBJECTID, 0);
+ }
+
+ int load_free_ino_cache(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
+ {
+ struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
+ struct btrfs_path *path;
+ struct inode *inode;
+ int ret = 0;
+ u64 root_gen = btrfs_root_generation(&root->root_item);
+
+ /*
+ * If we're unmounting then just return, since this does a search on the
+ * normal root and not the commit root and we could deadlock.
+ */
+ smp_mb();
+ if (fs_info->closing)
+ return 0;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return 0;
+
+ inode = lookup_free_ino_inode(root, path);
+ if (IS_ERR(inode))
+ goto out;
+
+ if (root_gen != BTRFS_I(inode)->generation)
+ goto out_put;
+
+ ret = __load_free_space_cache(root, inode, ctl, path, 0);
+
+ if (ret < 0)
+ printk(KERN_ERR "btrfs: failed to load free ino cache for "
+ "root %llu\n", root->root_key.objectid);
+ out_put:
+ iput(inode);
+ out:
+ btrfs_free_path(path);
+ return ret;
+ }
+
+ int btrfs_write_out_ino_cache(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_path *path)
+ {
+ struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
+ struct inode *inode;
+ int ret;
+
+ inode = lookup_free_ino_inode(root, path);
+ if (IS_ERR(inode))
+ return 0;
+
+ ret = __btrfs_write_out_cache(root, inode, ctl, NULL, trans, path, 0);
+ if (ret < 0)
+ printk(KERN_ERR "btrfs: failed to write free ino cache "
+ "for root %llu\n", root->root_key.objectid);
+
+ iput(inode);
+ return ret;
+ }
#include "compression.h"
#include "locking.h"
#include "free-space-cache.h"
+ #include "inode-map.h"
struct btrfs_iget_args {
u64 ino;
unsigned long *nr_written, int unlock);
static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir)
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
{
int err;
err = btrfs_init_acl(trans, inode, dir);
if (!err)
- err = btrfs_xattr_security_init(trans, inode, dir);
+ err = btrfs_xattr_security_init(trans, inode, dir, qstr);
return err;
}
path->leave_spinning = 1;
btrfs_set_trans_block_group(trans, inode);
- key.objectid = inode->i_ino;
+ key.objectid = btrfs_ino(inode);
key.offset = start;
btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
datasize = btrfs_file_extent_calc_inline_size(cur_size);
return alloc_hint;
}
+ static inline bool is_free_space_inode(struct btrfs_root *root,
+ struct inode *inode)
+ {
+ if (root == root->fs_info->tree_root ||
+ BTRFS_I(inode)->location.objectid == BTRFS_FREE_INO_OBJECTID)
+ return true;
+ return false;
+ }
+
/*
* when extent_io.c finds a delayed allocation range in the file,
* the call backs end up in this code. The basic idea is to
struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
int ret = 0;
- BUG_ON(root == root->fs_info->tree_root);
+ BUG_ON(is_free_space_inode(root, inode));
trans = btrfs_join_transaction(root, 1);
BUG_ON(IS_ERR(trans));
btrfs_set_trans_block_group(trans, inode);
1, 0, NULL, GFP_NOFS);
while (start < end) {
async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS);
+ BUG_ON(!async_cow);
async_cow->inode = inode;
async_cow->root = root;
async_cow->locked_page = locked_page;
int type;
int nocow;
int check_prev = 1;
- bool nolock = false;
+ bool nolock;
+ u64 ino = btrfs_ino(inode);
path = btrfs_alloc_path();
BUG_ON(!path);
- if (root == root->fs_info->tree_root) {
- nolock = true;
+
+ nolock = is_free_space_inode(root, inode);
+
+ if (nolock)
trans = btrfs_join_transaction_nolock(root, 1);
- } else {
+ else
trans = btrfs_join_transaction(root, 1);
- }
BUG_ON(IS_ERR(trans));
cow_start = (u64)-1;
cur_offset = start;
while (1) {
- ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino,
+ ret = btrfs_lookup_file_extent(trans, root, path, ino,
cur_offset, 0);
BUG_ON(ret < 0);
if (ret > 0 && path->slots[0] > 0 && check_prev) {
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &found_key,
path->slots[0] - 1);
- if (found_key.objectid == inode->i_ino &&
+ if (found_key.objectid == ino &&
found_key.type == BTRFS_EXTENT_DATA_KEY)
path->slots[0]--;
}
num_bytes = 0;
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
- if (found_key.objectid > inode->i_ino ||
+ if (found_key.objectid > ino ||
found_key.type > BTRFS_EXTENT_DATA_KEY ||
found_key.offset > end)
break;
goto out_check;
if (btrfs_extent_readonly(root, disk_bytenr))
goto out_check;
- if (btrfs_cross_ref_exist(trans, root, inode->i_ino,
+ if (btrfs_cross_ref_exist(trans, root, ino,
found_key.offset -
extent_offset, disk_bytenr))
goto out_check;
if (!(state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 len = state->end + 1 - state->start;
- int do_list = (root->root_key.objectid !=
- BTRFS_ROOT_TREE_OBJECTID);
+ bool do_list = !is_free_space_inode(root, inode);
if (*bits & EXTENT_FIRST_DELALLOC)
*bits &= ~EXTENT_FIRST_DELALLOC;
if ((state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 len = state->end + 1 - state->start;
- int do_list = (root->root_key.objectid !=
- BTRFS_ROOT_TREE_OBJECTID);
+ bool do_list = !is_free_space_inode(root, inode);
if (*bits & EXTENT_FIRST_DELALLOC)
*bits &= ~EXTENT_FIRST_DELALLOC;
skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
- if (root == root->fs_info->tree_root)
+ if (is_free_space_inode(root, inode))
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 2);
else
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
&hint, 0);
BUG_ON(ret);
- ins.objectid = inode->i_ino;
+ ins.objectid = btrfs_ino(inode);
ins.offset = file_pos;
ins.type = BTRFS_EXTENT_DATA_KEY;
ret = btrfs_insert_empty_item(trans, root, path, &ins, sizeof(*fi));
ins.type = BTRFS_EXTENT_ITEM_KEY;
ret = btrfs_alloc_reserved_file_extent(trans, root,
root->root_key.objectid,
- inode->i_ino, file_pos, &ins);
+ btrfs_ino(inode), file_pos, &ins);
BUG_ON(ret);
btrfs_free_path(path);
struct extent_state *cached_state = NULL;
int compress_type = 0;
int ret;
- bool nolock = false;
+ bool nolock;
ret = btrfs_dec_test_ordered_pending(inode, &ordered_extent, start,
end - start + 1);
return 0;
BUG_ON(!ordered_extent);
- nolock = (root == root->fs_info->tree_root);
+ nolock = is_free_space_inode(root, inode);
if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) {
BUG_ON(!list_empty(&ordered_extent->list));
zeroit:
if (printk_ratelimit()) {
- printk(KERN_INFO "btrfs csum failed ino %lu off %llu csum %u "
- "private %llu\n", page->mapping->host->i_ino,
+ printk(KERN_INFO "btrfs csum failed ino %llu off %llu csum %u "
+ "private %llu\n",
+ (unsigned long long)btrfs_ino(page->mapping->host),
(unsigned long long)start, csum,
(unsigned long long)private);
}
/* insert an orphan item to track this unlinked/truncated file */
if (insert >= 1) {
- ret = btrfs_insert_orphan_item(trans, root, inode->i_ino);
+ ret = btrfs_insert_orphan_item(trans, root, btrfs_ino(inode));
BUG_ON(ret);
}
spin_unlock(&root->orphan_lock);
if (trans && delete_item) {
- ret = btrfs_del_orphan_item(trans, root, inode->i_ino);
+ ret = btrfs_del_orphan_item(trans, root, btrfs_ino(inode));
BUG_ON(ret);
}
/*
* if ret == 0 means we found what we were searching for, which
- * is weird, but possible, so only screw with path if we didnt
+ * is weird, but possible, so only screw with path if we didn't
* find the key and see if we have stuff that matches
*/
if (ret > 0) {
* try to precache a NULL acl entry for files that don't have
* any xattrs or acls
*/
- maybe_acls = acls_after_inode_item(leaf, path->slots[0], inode->i_ino);
+ maybe_acls = acls_after_inode_item(leaf, path->slots[0],
+ btrfs_ino(inode));
if (!maybe_acls)
cache_no_acl(inode);
struct btrfs_dir_item *di;
struct btrfs_key key;
u64 index;
+ u64 ino = btrfs_ino(inode);
+ u64 dir_ino = btrfs_ino(dir);
path = btrfs_alloc_path();
if (!path) {
}
path->leave_spinning = 1;
- di = btrfs_lookup_dir_item(trans, root, path, dir->i_ino,
+ di = btrfs_lookup_dir_item(trans, root, path, dir_ino,
name, name_len, -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
goto err;
btrfs_release_path(root, path);
- ret = btrfs_del_inode_ref(trans, root, name, name_len,
- inode->i_ino,
- dir->i_ino, &index);
+ ret = btrfs_del_inode_ref(trans, root, name, name_len, ino,
+ dir_ino, &index);
if (ret) {
printk(KERN_INFO "btrfs failed to delete reference to %.*s, "
- "inode %lu parent %lu\n", name_len, name,
- inode->i_ino, dir->i_ino);
+ "inode %llu parent %llu\n", name_len, name,
+ (unsigned long long)ino, (unsigned long long)dir_ino);
goto err;
}
- di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino,
+ di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino,
index, name, name_len, -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
btrfs_release_path(root, path);
ret = btrfs_del_inode_ref_in_log(trans, root, name, name_len,
- inode, dir->i_ino);
+ inode, dir_ino);
BUG_ON(ret != 0 && ret != -ENOENT);
ret = btrfs_del_dir_entries_in_log(trans, root, name, name_len,
int check_link = 1;
int err = -ENOSPC;
int ret;
+ u64 ino = btrfs_ino(inode);
+ u64 dir_ino = btrfs_ino(dir);
trans = btrfs_start_transaction(root, 10);
if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC)
return trans;
- if (inode->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
+ if (ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
return ERR_PTR(-ENOSPC);
/* check if there is someone else holds reference */
if (ret == 0 && S_ISREG(inode->i_mode)) {
ret = btrfs_lookup_file_extent(trans, root, path,
- inode->i_ino, (u64)-1, 0);
+ ino, (u64)-1, 0);
if (ret < 0) {
err = ret;
goto out;
goto out;
}
- di = btrfs_lookup_dir_item(trans, root, path, dir->i_ino,
+ di = btrfs_lookup_dir_item(trans, root, path, dir_ino,
dentry->d_name.name, dentry->d_name.len, 0);
if (IS_ERR(di)) {
err = PTR_ERR(di);
ref = btrfs_lookup_inode_ref(trans, root, path,
dentry->d_name.name, dentry->d_name.len,
- inode->i_ino, dir->i_ino, 0);
+ ino, dir_ino, 0);
if (IS_ERR(ref)) {
err = PTR_ERR(ref);
goto out;
index = btrfs_inode_ref_index(path->nodes[0], ref);
btrfs_release_path(root, path);
- di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino, index,
+ di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino, index,
dentry->d_name.name, dentry->d_name.len, 0);
if (IS_ERR(di)) {
err = PTR_ERR(di);
struct btrfs_key key;
u64 index;
int ret;
+ u64 dir_ino = btrfs_ino(dir);
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- di = btrfs_lookup_dir_item(trans, root, path, dir->i_ino,
+ di = btrfs_lookup_dir_item(trans, root, path, dir_ino,
name, name_len, -1);
BUG_ON(!di || IS_ERR(di));
ret = btrfs_del_root_ref(trans, root->fs_info->tree_root,
objectid, root->root_key.objectid,
- dir->i_ino, &index, name, name_len);
+ dir_ino, &index, name, name_len);
if (ret < 0) {
BUG_ON(ret != -ENOENT);
- di = btrfs_search_dir_index_item(root, path, dir->i_ino,
+ di = btrfs_search_dir_index_item(root, path, dir_ino,
name, name_len);
BUG_ON(!di || IS_ERR(di));
index = key.offset;
}
- di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino,
+ di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino,
index, name, name_len, -1);
BUG_ON(!di || IS_ERR(di));
unsigned long nr = 0;
if (inode->i_size > BTRFS_EMPTY_DIR_SIZE ||
- inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
+ btrfs_ino(inode) == BTRFS_FIRST_FREE_OBJECTID)
return -ENOTEMPTY;
trans = __unlink_start_trans(dir, dentry);
btrfs_set_trans_block_group(trans, dir);
- if (unlikely(inode->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
+ if (unlikely(btrfs_ino(inode) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
err = btrfs_unlink_subvol(trans, root, dir,
BTRFS_I(inode)->location.objectid,
dentry->d_name.name,
int encoding;
int ret;
int err = 0;
+ u64 ino = btrfs_ino(inode);
BUG_ON(new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY);
BUG_ON(!path);
path->reada = -1;
- key.objectid = inode->i_ino;
+ key.objectid = ino;
key.offset = (u64)-1;
key.type = (u8)-1;
found_type = btrfs_key_type(&found_key);
encoding = 0;
- if (found_key.objectid != inode->i_ino)
+ if (found_key.objectid != ino)
break;
if (found_type < min_type)
ret = btrfs_free_extent(trans, root, extent_start,
extent_num_bytes, 0,
btrfs_header_owner(leaf),
- inode->i_ino, extent_offset);
+ ino, extent_offset);
BUG_ON(ret);
}
if (path->slots[0] == 0 ||
path->slots[0] != pending_del_slot) {
- if (root->ref_cows) {
+ if (root->ref_cows &&
+ BTRFS_I(inode)->location.objectid !=
+ BTRFS_FREE_INO_OBJECTID) {
err = -EAGAIN;
goto out;
}
break;
err = btrfs_insert_file_extent(trans, root,
- inode->i_ino, cur_offset, 0,
+ btrfs_ino(inode), cur_offset, 0,
0, hole_size, 0, hole_size,
0, 0, 0);
if (err)
truncate_inode_pages(&inode->i_data, 0);
if (inode->i_nlink && (btrfs_root_refs(&root->root_item) != 0 ||
- root == root->fs_info->tree_root))
+ is_free_space_inode(root, inode)))
goto no_delete;
if (is_bad_inode(inode)) {
BUG_ON(ret);
}
+ if (!(root == root->fs_info->tree_root ||
+ root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID))
+ btrfs_return_ino(root, btrfs_ino(inode));
+
nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
btrfs_btree_balance_dirty(root, nr);
path = btrfs_alloc_path();
BUG_ON(!path);
- di = btrfs_lookup_dir_item(NULL, root, path, dir->i_ino, name,
+ di = btrfs_lookup_dir_item(NULL, root, path, btrfs_ino(dir), name,
namelen, 0);
if (IS_ERR(di))
ret = PTR_ERR(di);
leaf = path->nodes[0];
ref = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_ref);
- if (btrfs_root_ref_dirid(leaf, ref) != dir->i_ino ||
+ if (btrfs_root_ref_dirid(leaf, ref) != btrfs_ino(dir) ||
btrfs_root_ref_name_len(leaf, ref) != dentry->d_name.len)
goto out;
struct btrfs_inode *entry;
struct rb_node **p;
struct rb_node *parent;
+ u64 ino = btrfs_ino(inode);
again:
p = &root->inode_tree.rb_node;
parent = NULL;
parent = *p;
entry = rb_entry(parent, struct btrfs_inode, rb_node);
- if (inode->i_ino < entry->vfs_inode.i_ino)
+ if (ino < btrfs_ino(&entry->vfs_inode))
p = &parent->rb_left;
- else if (inode->i_ino > entry->vfs_inode.i_ino)
+ else if (ino > btrfs_ino(&entry->vfs_inode))
p = &parent->rb_right;
else {
WARN_ON(!(entry->vfs_inode.i_state &
prev = node;
entry = rb_entry(node, struct btrfs_inode, rb_node);
- if (objectid < entry->vfs_inode.i_ino)
+ if (objectid < btrfs_ino(&entry->vfs_inode))
node = node->rb_left;
- else if (objectid > entry->vfs_inode.i_ino)
+ else if (objectid > btrfs_ino(&entry->vfs_inode))
node = node->rb_right;
else
break;
if (!node) {
while (prev) {
entry = rb_entry(prev, struct btrfs_inode, rb_node);
- if (objectid <= entry->vfs_inode.i_ino) {
+ if (objectid <= btrfs_ino(&entry->vfs_inode)) {
node = prev;
break;
}
}
while (node) {
entry = rb_entry(node, struct btrfs_inode, rb_node);
- objectid = entry->vfs_inode.i_ino + 1;
+ objectid = btrfs_ino(&entry->vfs_inode) + 1;
inode = igrab(&entry->vfs_inode);
if (inode) {
spin_unlock(&root->inode_lock);
static int btrfs_find_actor(struct inode *inode, void *opaque)
{
struct btrfs_iget_args *args = opaque;
- return args->ino == inode->i_ino &&
+ return args->ino == btrfs_ino(inode) &&
args->root == BTRFS_I(inode)->root;
}
/* special case for "." */
if (filp->f_pos == 0) {
- over = filldir(dirent, ".", 1,
- 1, inode->i_ino,
- DT_DIR);
+ over = filldir(dirent, ".", 1, 1, btrfs_ino(inode), DT_DIR);
if (over)
return 0;
filp->f_pos = 1;
btrfs_set_key_type(&key, key_type);
key.offset = filp->f_pos;
- key.objectid = inode->i_ino;
+ key.objectid = btrfs_ino(inode);
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0)
return 0;
smp_mb();
- nolock = (root->fs_info->closing && root == root->fs_info->tree_root);
+ if (root->fs_info->closing && is_free_space_inode(root, inode))
+ nolock = true;
if (wbc->sync_mode == WB_SYNC_ALL) {
if (nolock)
if (IS_ERR(trans)) {
if (printk_ratelimit()) {
printk(KERN_ERR "btrfs: fail to "
- "dirty inode %lu error %ld\n",
- inode->i_ino, PTR_ERR(trans));
+ "dirty inode %llu error %ld\n",
+ (unsigned long long)btrfs_ino(inode),
+ PTR_ERR(trans));
}
return;
}
if (ret) {
if (printk_ratelimit()) {
printk(KERN_ERR "btrfs: fail to "
- "dirty inode %lu error %d\n",
- inode->i_ino, ret);
+ "dirty inode %llu error %d\n",
+ (unsigned long long)btrfs_ino(inode),
+ ret);
}
}
}
struct extent_buffer *leaf;
int ret;
- key.objectid = inode->i_ino;
+ key.objectid = btrfs_ino(inode);
btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
key.offset = (u64)-1;
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
- if (found_key.objectid != inode->i_ino ||
+ if (found_key.objectid != btrfs_ino(inode) ||
btrfs_key_type(&found_key) != BTRFS_DIR_INDEX_KEY) {
BTRFS_I(inode)->index_cnt = 2;
goto out;
return ERR_PTR(-ENOMEM);
}
+ /*
+ * we have to initialize this early, so we can reclaim the inode
+ * number if we fail afterwards in this function.
+ */
+ inode->i_ino = objectid;
+
if (dir) {
trace_btrfs_inode_request(dir);
goto fail;
inode_init_owner(inode, dir, mode);
- inode->i_ino = objectid;
inode_set_bytes(inode, 0);
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
int ret = 0;
struct btrfs_key key;
struct btrfs_root *root = BTRFS_I(parent_inode)->root;
+ u64 ino = btrfs_ino(inode);
+ u64 parent_ino = btrfs_ino(parent_inode);
- if (unlikely(inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)) {
+ if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) {
memcpy(&key, &BTRFS_I(inode)->root->root_key, sizeof(key));
} else {
- key.objectid = inode->i_ino;
+ key.objectid = ino;
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
key.offset = 0;
}
- if (unlikely(inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)) {
+ if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) {
ret = btrfs_add_root_ref(trans, root->fs_info->tree_root,
key.objectid, root->root_key.objectid,
- parent_inode->i_ino,
- index, name, name_len);
+ parent_ino, index, name, name_len);
} else if (add_backref) {
- ret = btrfs_insert_inode_ref(trans, root,
- name, name_len, inode->i_ino,
- parent_inode->i_ino, index);
+ ret = btrfs_insert_inode_ref(trans, root, name, name_len, ino,
+ parent_ino, index);
}
if (ret == 0) {
ret = btrfs_insert_dir_item(trans, root, name, name_len,
- parent_inode->i_ino, &key,
+ parent_ino, &key,
btrfs_inode_type(inode), index);
BUG_ON(ret);
if (!new_valid_dev(rdev))
return -EINVAL;
- err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
- if (err)
- return err;
-
/*
* 2 for inode item and ref
* 2 for dir items
btrfs_set_trans_block_group(trans, dir);
+ err = btrfs_find_free_ino(root, &objectid);
+ if (err)
+ goto out_unlock;
+
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
- dentry->d_name.len, dir->i_ino, objectid,
+ dentry->d_name.len, btrfs_ino(dir), objectid,
BTRFS_I(dir)->block_group, mode, &index);
- err = PTR_ERR(inode);
- if (IS_ERR(inode))
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
goto out_unlock;
+ }
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
u64 objectid;
u64 index = 0;
- err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
- if (err)
- return err;
/*
* 2 for inode item and ref
* 2 for dir items
btrfs_set_trans_block_group(trans, dir);
+ err = btrfs_find_free_ino(root, &objectid);
+ if (err)
+ goto out_unlock;
+
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
- dentry->d_name.len, dir->i_ino, objectid,
+ dentry->d_name.len, btrfs_ino(dir), objectid,
BTRFS_I(dir)->block_group, mode, &index);
- err = PTR_ERR(inode);
- if (IS_ERR(inode))
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
goto out_unlock;
+ }
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
int err;
int drop_inode = 0;
- if (inode->i_nlink == 0)
- return -ENOENT;
-
/* do not allow sys_link's with other subvols of the same device */
if (root->objectid != BTRFS_I(inode)->root->objectid)
return -EXDEV;
u64 index = 0;
unsigned long nr = 1;
- err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
- if (err)
- return err;
-
/*
* 2 items for inode and ref
* 2 items for dir items
return PTR_ERR(trans);
btrfs_set_trans_block_group(trans, dir);
+ err = btrfs_find_free_ino(root, &objectid);
+ if (err)
+ goto out_fail;
+
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
- dentry->d_name.len, dir->i_ino, objectid,
+ dentry->d_name.len, btrfs_ino(dir), objectid,
BTRFS_I(dir)->block_group, S_IFDIR | mode,
&index);
if (IS_ERR(inode)) {
drop_on_err = 1;
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
goto out_fail;
inline_size = btrfs_file_extent_inline_item_len(leaf,
btrfs_item_nr(leaf, path->slots[0]));
tmp = kmalloc(inline_size, GFP_NOFS);
+ if (!tmp)
+ return -ENOMEM;
ptr = btrfs_file_extent_inline_start(item);
read_extent_buffer(leaf, tmp, ptr, inline_size);
u64 bytenr;
u64 extent_start = 0;
u64 extent_end = 0;
- u64 objectid = inode->i_ino;
+ u64 objectid = btrfs_ino(inode);
u32 found_type;
struct btrfs_path *path = NULL;
struct btrfs_root *root = BTRFS_I(inode)->root;
if (!path)
return -ENOMEM;
- ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino,
+ ret = btrfs_lookup_file_extent(trans, root, path, btrfs_ino(inode),
offset, 0);
if (ret < 0)
goto out;
ret = 0;
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
- if (key.objectid != inode->i_ino ||
+ if (key.objectid != btrfs_ino(inode) ||
key.type != BTRFS_EXTENT_DATA_KEY) {
/* not our file or wrong item type, must cow */
goto out;
* look for other files referencing this extent, if we
* find any we must cow
*/
- if (btrfs_cross_ref_exist(trans, root, inode->i_ino,
+ if (btrfs_cross_ref_exist(trans, root, btrfs_ino(inode),
key.offset - backref_offset, disk_bytenr))
goto out;
flush_dcache_page(bvec->bv_page);
if (csum != *private) {
- printk(KERN_ERR "btrfs csum failed ino %lu off"
+ printk(KERN_ERR "btrfs csum failed ino %llu off"
" %llu csum %u private %u\n",
- inode->i_ino, (unsigned long long)start,
+ (unsigned long long)btrfs_ino(inode),
+ (unsigned long long)start,
csum, *private);
err = -EIO;
}
struct btrfs_dio_private *dip = bio->bi_private;
if (err) {
- printk(KERN_ERR "btrfs direct IO failed ino %lu rw %lu "
+ printk(KERN_ERR "btrfs direct IO failed ino %llu rw %lu "
"sector %#Lx len %u err no %d\n",
- dip->inode->i_ino, bio->bi_rw,
+ (unsigned long long)btrfs_ino(dip->inode), bio->bi_rw,
(unsigned long long)bio->bi_sector, bio->bi_size, err);
dip->errors = 1;
ret = btrfs_map_block(map_tree, READ, start_sector << 9,
&map_length, NULL, 0);
if (ret) {
- bio_put(bio);
+ bio_put(orig_bio);
return -EIO;
}
spin_lock(&root->orphan_lock);
if (!list_empty(&BTRFS_I(inode)->i_orphan)) {
- printk(KERN_INFO "BTRFS: inode %lu still on the orphan list\n",
- inode->i_ino);
+ printk(KERN_INFO "BTRFS: inode %llu still on the orphan list\n",
+ (unsigned long long)btrfs_ino(inode));
list_del_init(&BTRFS_I(inode)->i_orphan);
}
spin_unlock(&root->orphan_lock);
struct btrfs_root *root = BTRFS_I(inode)->root;
if (btrfs_root_refs(&root->root_item) == 0 &&
- root != root->fs_info->tree_root)
+ !is_free_space_inode(root, inode))
return 1;
else
return generic_drop_inode(inode);
u64 index = 0;
u64 root_objectid;
int ret;
+ u64 old_ino = btrfs_ino(old_inode);
- if (new_dir->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
+ if (btrfs_ino(new_dir) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
return -EPERM;
/* we only allow rename subvolume link between subvolumes */
- if (old_inode->i_ino != BTRFS_FIRST_FREE_OBJECTID && root != dest)
+ if (old_ino != BTRFS_FIRST_FREE_OBJECTID && root != dest)
return -EXDEV;
- if (old_inode->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ||
- (new_inode && new_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID))
+ if (old_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ||
+ (new_inode && btrfs_ino(new_inode) == BTRFS_FIRST_FREE_OBJECTID))
return -ENOTEMPTY;
if (S_ISDIR(old_inode->i_mode) && new_inode &&
filemap_flush(old_inode->i_mapping);
/* close the racy window with snapshot create/destroy ioctl */
- if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
+ if (old_ino == BTRFS_FIRST_FREE_OBJECTID)
down_read(&root->fs_info->subvol_sem);
/*
* We want to reserve the absolute worst case amount of items. So if
if (ret)
goto out_fail;
- if (unlikely(old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)) {
+ if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) {
/* force full log commit if subvolume involved. */
root->fs_info->last_trans_log_full_commit = trans->transid;
} else {
ret = btrfs_insert_inode_ref(trans, dest,
new_dentry->d_name.name,
new_dentry->d_name.len,
- old_inode->i_ino,
- new_dir->i_ino, index);
+ old_ino,
+ btrfs_ino(new_dir), index);
if (ret)
goto out_fail;
/*
* make sure the inode gets flushed if it is replacing
* something.
*/
- if (new_inode && new_inode->i_size &&
- old_inode && S_ISREG(old_inode->i_mode)) {
+ if (new_inode && new_inode->i_size && S_ISREG(old_inode->i_mode))
btrfs_add_ordered_operation(trans, root, old_inode);
- }
old_dir->i_ctime = old_dir->i_mtime = ctime;
new_dir->i_ctime = new_dir->i_mtime = ctime;
if (old_dentry->d_parent != new_dentry->d_parent)
btrfs_record_unlink_dir(trans, old_dir, old_inode, 1);
- if (unlikely(old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)) {
+ if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) {
root_objectid = BTRFS_I(old_inode)->root->root_key.objectid;
ret = btrfs_unlink_subvol(trans, root, old_dir, root_objectid,
old_dentry->d_name.name,
if (new_inode) {
new_inode->i_ctime = CURRENT_TIME;
- if (unlikely(new_inode->i_ino ==
+ if (unlikely(btrfs_ino(new_inode) ==
BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
root_objectid = BTRFS_I(new_inode)->location.objectid;
ret = btrfs_unlink_subvol(trans, dest, new_dir,
new_dentry->d_name.len, 0, index);
BUG_ON(ret);
- if (old_inode->i_ino != BTRFS_FIRST_FREE_OBJECTID) {
+ if (old_ino != BTRFS_FIRST_FREE_OBJECTID) {
struct dentry *parent = dget_parent(new_dentry);
btrfs_log_new_name(trans, old_inode, old_dir, parent);
dput(parent);
out_fail:
btrfs_end_transaction_throttle(trans, root);
out_notrans:
- if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
+ if (old_ino == BTRFS_FIRST_FREE_OBJECTID)
up_read(&root->fs_info->subvol_sem);
return ret;
if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(root))
return -ENAMETOOLONG;
- err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
- if (err)
- return err;
/*
* 2 items for inode item and ref
* 2 items for dir items
btrfs_set_trans_block_group(trans, dir);
+ err = btrfs_find_free_ino(root, &objectid);
+ if (err)
+ goto out_unlock;
+
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
- dentry->d_name.len, dir->i_ino, objectid,
+ dentry->d_name.len, btrfs_ino(dir), objectid,
BTRFS_I(dir)->block_group, S_IFLNK|S_IRWXUGO,
&index);
- err = PTR_ERR(inode);
- if (IS_ERR(inode))
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
goto out_unlock;
+ }
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
path = btrfs_alloc_path();
BUG_ON(!path);
- key.objectid = inode->i_ino;
+ key.objectid = btrfs_ino(inode);
key.offset = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
datasize = btrfs_file_extent_calc_inline_size(name_len);
.writepage = btrfs_writepage,
.writepages = btrfs_writepages,
.readpages = btrfs_readpages,
- .sync_page = block_sync_page,
.direct_IO = btrfs_direct_IO,
.invalidatepage = btrfs_invalidatepage,
.releasepage = btrfs_releasepage,
#include "print-tree.h"
#include "volumes.h"
#include "locking.h"
+ #include "inode-map.h"
/* Mask out flags that are inappropriate for the given type of inode. */
static inline __u32 btrfs_mask_flags(umode_t mode, __u32 flags)
iflags |= FS_NOATIME_FL;
if (flags & BTRFS_INODE_DIRSYNC)
iflags |= FS_DIRSYNC_FL;
+ if (flags & BTRFS_INODE_NODATACOW)
+ iflags |= FS_NOCOW_FL;
+
+ if ((flags & BTRFS_INODE_COMPRESS) && !(flags & BTRFS_INODE_NOCOMPRESS))
+ iflags |= FS_COMPR_FL;
+ else if (flags & BTRFS_INODE_NOCOMPRESS)
+ iflags |= FS_NOCOMP_FL;
return iflags;
}
if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
FS_NOATIME_FL | FS_NODUMP_FL | \
FS_SYNC_FL | FS_DIRSYNC_FL | \
- FS_NOCOMP_FL | FS_COMPR_FL | \
- FS_NOCOW_FL | FS_COW_FL))
+ FS_NOCOMP_FL | FS_COMPR_FL |
+ FS_NOCOW_FL))
return -EOPNOTSUPP;
if ((flags & FS_NOCOMP_FL) && (flags & FS_COMPR_FL))
return -EINVAL;
- if ((flags & FS_NOCOW_FL) && (flags & FS_COW_FL))
- return -EINVAL;
-
return 0;
}
if (ret)
return ret;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
mutex_lock(&inode->i_mutex);
ip->flags |= BTRFS_INODE_DIRSYNC;
else
ip->flags &= ~BTRFS_INODE_DIRSYNC;
+ if (flags & FS_NOCOW_FL)
+ ip->flags |= BTRFS_INODE_NODATACOW;
+ else
+ ip->flags &= ~BTRFS_INODE_NODATACOW;
/*
* The COMPRESS flag can only be changed by users, while the NOCOMPRESS
} else if (flags & FS_COMPR_FL) {
ip->flags |= BTRFS_INODE_COMPRESS;
ip->flags &= ~BTRFS_INODE_NOCOMPRESS;
+ } else {
+ ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS);
}
- if (flags & FS_NOCOW_FL)
- ip->flags |= BTRFS_INODE_NODATACOW;
- else if (flags & FS_COW_FL)
- ip->flags &= ~BTRFS_INODE_NODATACOW;
trans = btrfs_join_transaction(root, 1);
BUG_ON(IS_ERR(trans));
u64 new_dirid = BTRFS_FIRST_FREE_OBJECTID;
u64 index = 0;
- ret = btrfs_find_free_objectid(NULL, root->fs_info->tree_root,
- 0, &objectid);
+ ret = btrfs_find_free_objectid(root->fs_info->tree_root, &objectid);
if (ret) {
dput(parent);
return ret;
BUG_ON(ret);
ret = btrfs_insert_dir_item(trans, root,
- name, namelen, dir->i_ino, &key,
+ name, namelen, btrfs_ino(dir), &key,
BTRFS_FT_DIR, index);
if (ret)
goto fail;
ret = btrfs_add_root_ref(trans, root->fs_info->tree_root,
objectid, root->root_key.objectid,
- dir->i_ino, index, name, namelen);
+ btrfs_ino(dir), index, name, namelen);
BUG_ON(ret);
int ret = 0;
u64 flags = 0;
- if (inode->i_ino != BTRFS_FIRST_FREE_OBJECTID)
+ if (btrfs_ino(inode) != BTRFS_FIRST_FREE_OBJECTID)
return -EINVAL;
down_read(&root->fs_info->subvol_sem);
if (root->fs_info->sb->s_flags & MS_RDONLY)
return -EROFS;
- if (inode->i_ino != BTRFS_FIRST_FREE_OBJECTID)
+ if (btrfs_ino(inode) != BTRFS_FIRST_FREE_OBJECTID)
return -EINVAL;
if (copy_from_user(&flags, arg, sizeof(flags)))
if (flags & ~BTRFS_SUBVOL_RDONLY)
return -EOPNOTSUPP;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
down_write(&root->fs_info->subvol_sem);
goto out_dput;
}
- if (inode->i_ino != BTRFS_FIRST_FREE_OBJECTID) {
+ if (btrfs_ino(inode) != BTRFS_FIRST_FREE_OBJECTID) {
err = -EINVAL;
goto out_dput;
}
}
/* clone data */
- key.objectid = src->i_ino;
+ key.objectid = btrfs_ino(src);
key.type = BTRFS_EXTENT_DATA_KEY;
key.offset = 0;
btrfs_item_key_to_cpu(leaf, &key, slot);
if (btrfs_key_type(&key) > BTRFS_EXTENT_DATA_KEY ||
- key.objectid != src->i_ino)
+ key.objectid != btrfs_ino(src))
break;
if (btrfs_key_type(&key) == BTRFS_EXTENT_DATA_KEY) {
goto next;
memcpy(&new_key, &key, sizeof(new_key));
- new_key.objectid = inode->i_ino;
+ new_key.objectid = btrfs_ino(inode);
if (off <= key.offset)
new_key.offset = key.offset + destoff - off;
else
ret = btrfs_inc_extent_ref(trans, root,
disko, diskl, 0,
root->root_key.objectid,
- inode->i_ino,
+ btrfs_ino(inode),
new_key.offset - datao);
BUG_ON(ret);
}
#include "btrfs_inode.h"
#include "async-thread.h"
#include "free-space-cache.h"
+ #include "inode-map.h"
/*
* backref_node, mapping_node and tree_block start with this
prev = node;
entry = rb_entry(node, struct btrfs_inode, rb_node);
- if (objectid < entry->vfs_inode.i_ino)
+ if (objectid < btrfs_ino(&entry->vfs_inode))
node = node->rb_left;
- else if (objectid > entry->vfs_inode.i_ino)
+ else if (objectid > btrfs_ino(&entry->vfs_inode))
node = node->rb_right;
else
break;
if (!node) {
while (prev) {
entry = rb_entry(prev, struct btrfs_inode, rb_node);
- if (objectid <= entry->vfs_inode.i_ino) {
+ if (objectid <= btrfs_ino(&entry->vfs_inode)) {
node = prev;
break;
}
return inode;
}
- objectid = entry->vfs_inode.i_ino + 1;
+ objectid = btrfs_ino(&entry->vfs_inode) + 1;
if (cond_resched_lock(&root->inode_lock))
goto again;
return -ENOMEM;
bytenr -= BTRFS_I(reloc_inode)->index_cnt;
- ret = btrfs_lookup_file_extent(NULL, root, path, reloc_inode->i_ino,
+ ret = btrfs_lookup_file_extent(NULL, root, path, btrfs_ino(reloc_inode),
bytenr, 0);
if (ret < 0)
goto out;
if (first) {
inode = find_next_inode(root, key.objectid);
first = 0;
- } else if (inode && inode->i_ino < key.objectid) {
+ } else if (inode && btrfs_ino(inode) < key.objectid) {
btrfs_add_delayed_iput(inode);
inode = find_next_inode(root, key.objectid);
}
- if (inode && inode->i_ino == key.objectid) {
+ if (inode && btrfs_ino(inode) == key.objectid) {
end = key.offset +
btrfs_file_extent_num_bytes(leaf, fi);
WARN_ON(!IS_ALIGNED(key.offset,
struct inode *inode = NULL;
u64 objectid;
u64 start, end;
+ u64 ino;
objectid = min_key->objectid;
while (1) {
inode = find_next_inode(root, objectid);
if (!inode)
break;
+ ino = btrfs_ino(inode);
- if (inode->i_ino > max_key->objectid) {
+ if (ino > max_key->objectid) {
iput(inode);
break;
}
- objectid = inode->i_ino + 1;
+ objectid = ino + 1;
if (!S_ISREG(inode->i_mode))
continue;
- if (unlikely(min_key->objectid == inode->i_ino)) {
+ if (unlikely(min_key->objectid == ino)) {
if (min_key->type > BTRFS_EXTENT_DATA_KEY)
continue;
if (min_key->type < BTRFS_EXTENT_DATA_KEY)
start = 0;
}
- if (unlikely(max_key->objectid == inode->i_ino)) {
+ if (unlikely(max_key->objectid == ino)) {
if (max_key->type < BTRFS_EXTENT_DATA_KEY)
continue;
if (max_key->type > BTRFS_EXTENT_DATA_KEY) {
root = next->root;
BUG_ON(!root);
- /* no other choice for non-refernce counted tree */
+ /* no other choice for non-references counted tree */
if (!root->ref_cows)
return root;
if (IS_ERR(trans))
return ERR_CAST(trans);
- err = btrfs_find_free_objectid(trans, root, objectid, &objectid);
+ err = btrfs_find_free_objectid(root, &objectid);
if (err)
goto out;
* file. This must be done before the btrfs_drop_extents run
* so we don't try to drop this extent.
*/
- ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino,
+ ret = btrfs_lookup_file_extent(trans, root, path, btrfs_ino(inode),
start, 0);
if (ret == 0 &&
read_extent_buffer(eb, name, (unsigned long)(ref + 1), namelen);
/* if we already have a perfect match, we're done */
- if (inode_in_dir(root, path, dir->i_ino, inode->i_ino,
+ if (inode_in_dir(root, path, btrfs_ino(dir), btrfs_ino(inode),
btrfs_inode_ref_index(eb, ref),
name, namelen)) {
goto out;
unsigned long ptr;
unsigned long ptr_end;
int name_len;
+ u64 ino = btrfs_ino(inode);
- key.objectid = inode->i_ino;
+ key.objectid = ino;
key.type = BTRFS_INODE_REF_KEY;
key.offset = (u64)-1;
}
btrfs_item_key_to_cpu(path->nodes[0], &key,
path->slots[0]);
- if (key.objectid != inode->i_ino ||
+ if (key.objectid != ino ||
key.type != BTRFS_INODE_REF_KEY)
break;
ptr = btrfs_item_ptr_offset(path->nodes[0], path->slots[0]);
if (inode->i_nlink == 0) {
if (S_ISDIR(inode->i_mode)) {
ret = replay_dir_deletes(trans, root, NULL, path,
- inode->i_ino, 1);
+ ino, 1);
BUG_ON(ret);
}
- ret = insert_orphan_item(trans, root, inode->i_ino);
+ ret = insert_orphan_item(trans, root, ino);
BUG_ON(ret);
}
btrfs_free_path(path);
int ret;
int err = 0;
int bytes_del = 0;
+ u64 dir_ino = btrfs_ino(dir);
if (BTRFS_I(dir)->logged_trans < trans->transid)
return 0;
log = root->log_root;
path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
+ if (!path) {
+ err = -ENOMEM;
+ goto out_unlock;
+ }
- di = btrfs_lookup_dir_item(trans, log, path, dir->i_ino,
+ di = btrfs_lookup_dir_item(trans, log, path, dir_ino,
name, name_len, -1);
if (IS_ERR(di)) {
err = PTR_ERR(di);
BUG_ON(ret);
}
btrfs_release_path(log, path);
- di = btrfs_lookup_dir_index_item(trans, log, path, dir->i_ino,
+ di = btrfs_lookup_dir_index_item(trans, log, path, dir_ino,
index, name, name_len, -1);
if (IS_ERR(di)) {
err = PTR_ERR(di);
if (bytes_del) {
struct btrfs_key key;
- key.objectid = dir->i_ino;
+ key.objectid = dir_ino;
key.offset = 0;
key.type = BTRFS_INODE_ITEM_KEY;
btrfs_release_path(log, path);
}
fail:
btrfs_free_path(path);
+out_unlock:
mutex_unlock(&BTRFS_I(dir)->log_mutex);
if (ret == -ENOSPC) {
root->fs_info->last_trans_log_full_commit = trans->transid;
log = root->log_root;
mutex_lock(&BTRFS_I(inode)->log_mutex);
- ret = btrfs_del_inode_ref(trans, log, name, name_len, inode->i_ino,
+ ret = btrfs_del_inode_ref(trans, log, name, name_len, btrfs_ino(inode),
dirid, &index);
mutex_unlock(&BTRFS_I(inode)->log_mutex);
if (ret == -ENOSPC) {
int nritems;
u64 first_offset = min_offset;
u64 last_offset = (u64)-1;
+ u64 ino = btrfs_ino(inode);
log = root->log_root;
- max_key.objectid = inode->i_ino;
+ max_key.objectid = ino;
max_key.offset = (u64)-1;
max_key.type = key_type;
- min_key.objectid = inode->i_ino;
+ min_key.objectid = ino;
min_key.type = key_type;
min_key.offset = min_offset;
* we didn't find anything from this transaction, see if there
* is anything at all
*/
- if (ret != 0 || min_key.objectid != inode->i_ino ||
- min_key.type != key_type) {
- min_key.objectid = inode->i_ino;
+ if (ret != 0 || min_key.objectid != ino || min_key.type != key_type) {
+ min_key.objectid = ino;
min_key.type = key_type;
min_key.offset = (u64)-1;
btrfs_release_path(root, path);
btrfs_release_path(root, path);
return ret;
}
- ret = btrfs_previous_item(root, path, inode->i_ino, key_type);
+ ret = btrfs_previous_item(root, path, ino, key_type);
/* if ret == 0 there are items for this type,
* create a range to tell us the last key of this type.
}
/* go backward to find any previous key */
- ret = btrfs_previous_item(root, path, inode->i_ino, key_type);
+ ret = btrfs_previous_item(root, path, ino, key_type);
if (ret == 0) {
struct btrfs_key tmp;
btrfs_item_key_to_cpu(path->nodes[0], &tmp, path->slots[0]);
for (i = path->slots[0]; i < nritems; i++) {
btrfs_item_key_to_cpu(src, &min_key, i);
- if (min_key.objectid != inode->i_ino ||
- min_key.type != key_type)
+ if (min_key.objectid != ino || min_key.type != key_type)
goto done;
ret = overwrite_item(trans, log, dst_path, src, i,
&min_key);
goto done;
}
btrfs_item_key_to_cpu(path->nodes[0], &tmp, path->slots[0]);
- if (tmp.objectid != inode->i_ino || tmp.type != key_type) {
+ if (tmp.objectid != ino || tmp.type != key_type) {
last_offset = (u64)-1;
goto done;
}
* is valid
*/
ret = insert_dir_log_key(trans, log, path, key_type,
- inode->i_ino, first_offset,
- last_offset);
+ ino, first_offset, last_offset);
if (ret)
err = ret;
}
int nritems;
int ins_start_slot = 0;
int ins_nr;
+ u64 ino = btrfs_ino(inode);
log = root->log_root;
return -ENOMEM;
}
- min_key.objectid = inode->i_ino;
+ min_key.objectid = ino;
min_key.type = BTRFS_INODE_ITEM_KEY;
min_key.offset = 0;
- max_key.objectid = inode->i_ino;
+ max_key.objectid = ino;
/* today the code can only do partial logging of directories */
if (!S_ISDIR(inode->i_mode))
if (inode_only == LOG_INODE_EXISTS)
max_key_type = BTRFS_XATTR_ITEM_KEY;
- ret = drop_objectid_items(trans, log, path,
- inode->i_ino, max_key_type);
+ ret = drop_objectid_items(trans, log, path, ino, max_key_type);
} else {
ret = btrfs_truncate_inode_items(trans, log, inode, 0, 0);
}
break;
again:
/* note, ins_nr might be > 0 here, cleanup outside the loop */
- if (min_key.objectid != inode->i_ino)
+ if (min_key.objectid != ino)
break;
if (min_key.type > max_key.type)
break;
return -ENOMEM;
/* lookup the xattr by name */
- di = btrfs_lookup_xattr(NULL, root, path, inode->i_ino, name,
+ di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode), name,
strlen(name), 0);
if (!di) {
ret = -ENODATA;
return -ENOMEM;
/* first lets see if we already have this xattr */
- di = btrfs_lookup_xattr(trans, root, path, inode->i_ino, name,
+ di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode), name,
strlen(name), -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
}
/* ok we have to create a completely new xattr */
- ret = btrfs_insert_xattr_item(trans, root, path, inode->i_ino,
+ ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
name, name_len, value, size);
BUG_ON(ret);
out:
* NOTE: we set key.offset = 0; because we want to start with the
* first xattr that we find and walk forward
*/
- key.objectid = inode->i_ino;
+ key.objectid = btrfs_ino(inode);
btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY);
key.offset = 0;
}
int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir)
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
{
int err;
size_t len;
char *suffix;
char *name;
- err = security_inode_init_security(inode, dir, &suffix, &value, &len);
+ err = security_inode_init_security(inode, dir, qstr, &suffix, &value,
+ &len);
if (err) {
if (err == -EOPNOTSUPP)
return 0;
git.openpandora.org / pandora-kernel.git / commitdiff