#include <linux/crc32c.h>
#include <linux/slab.h>
#include <linux/migrate.h>
+#include <linux/ratelimit.h>
#include <asm/unaligned.h>
#include "compat.h"
#include "ctree.h"
#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);
* that covers the entire device
*/
static struct extent_map *btree_get_extent(struct inode *inode,
- struct page *page, size_t page_offset, u64 start, u64 len,
+ struct page *page, size_t pg_offset, u64 start, u64 len,
int create)
{
struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
}
read_unlock(&em_tree->lock);
- em = alloc_extent_map(GFP_NOFS);
+ em = alloc_extent_map();
if (!em) {
em = ERR_PTR(-ENOMEM);
goto out;
memcpy(&found, result, csum_size);
read_extent_buffer(buf, &val, 0, csum_size);
- if (printk_ratelimit()) {
- printk(KERN_INFO "btrfs: %s checksum verify "
+ printk_ratelimited(KERN_INFO "btrfs: %s checksum verify "
"failed on %llu wanted %X found %X "
"level %d\n",
root->fs_info->sb->s_id,
(unsigned long long)buf->start, val, found,
btrfs_header_level(buf));
- }
if (result != (char *)&inline_result)
kfree(result);
return 1;
ret = 0;
goto out;
}
- if (printk_ratelimit()) {
- printk("parent transid verify failed on %llu wanted %llu "
+ printk_ratelimited("parent transid verify failed on %llu wanted %llu "
"found %llu\n",
(unsigned long long)eb->start,
(unsigned long long)parent_transid,
(unsigned long long)btrfs_header_generation(eb));
- }
ret = 1;
clear_extent_buffer_uptodate(io_tree, eb, &cached_state);
out:
len = page->private >> 2;
WARN_ON(len == 0);
- eb = alloc_extent_buffer(tree, start, len, page, GFP_NOFS);
+ eb = alloc_extent_buffer(tree, start, len, page);
if (eb == NULL) {
WARN_ON(1);
goto out;
len = page->private >> 2;
WARN_ON(len == 0);
- eb = alloc_extent_buffer(tree, start, len, page, GFP_NOFS);
+ eb = alloc_extent_buffer(tree, start, len, page);
if (eb == NULL) {
ret = -EIO;
goto out;
found_start = btrfs_header_bytenr(eb);
if (found_start != start) {
- if (printk_ratelimit()) {
- printk(KERN_INFO "btrfs bad tree block start "
+ printk_ratelimited(KERN_INFO "btrfs bad tree block start "
"%llu %llu\n",
(unsigned long long)found_start,
(unsigned long long)eb->start);
- }
ret = -EIO;
goto err;
}
goto err;
}
if (check_tree_block_fsid(root, eb)) {
- if (printk_ratelimit()) {
- printk(KERN_INFO "btrfs bad fsid on block %llu\n",
+ printk_ratelimited(KERN_INFO "btrfs bad fsid on block %llu\n",
(unsigned long long)eb->start);
- }
ret = -EIO;
goto err;
}
return 256 * limit;
}
-int btrfs_congested_async(struct btrfs_fs_info *info, int iodone)
-{
- return atomic_read(&info->nr_async_bios) >
- btrfs_async_submit_limit(info);
-}
-
static void run_one_async_start(struct btrfs_work *work)
{
struct async_submit_bio *async;
struct inode *btree_inode = root->fs_info->btree_inode;
struct extent_buffer *eb;
eb = find_extent_buffer(&BTRFS_I(btree_inode)->io_tree,
- bytenr, blocksize, GFP_NOFS);
+ bytenr, blocksize);
return eb;
}
struct extent_buffer *eb;
eb = alloc_extent_buffer(&BTRFS_I(btree_inode)->io_tree,
- bytenr, blocksize, NULL, GFP_NOFS);
+ bytenr, blocksize, NULL);
return eb;
}
root->last_trans = 0;
root->highest_objectid = 0;
root->name = NULL;
- root->in_sysfs = 0;
root->inode_tree = RB_ROOT;
+ INIT_RADIX_TREE(&root->delayed_nodes_tree, GFP_ATOMIC);
root->block_rsv = NULL;
root->orphan_block_rsv = NULL;
INIT_LIST_HEAD(&root->dirty_list);
INIT_LIST_HEAD(&root->orphan_list);
INIT_LIST_HEAD(&root->root_list);
- spin_lock_init(&root->node_lock);
spin_lock_init(&root->orphan_lock);
spin_lock_init(&root->inode_lock);
spin_lock_init(&root->accounting_lock);
root->log_transid = 0;
root->last_log_commit = 0;
extent_io_tree_init(&root->dirty_log_pages,
- fs_info->btree_inode->i_mapping, GFP_NOFS);
+ fs_info->btree_inode->i_mapping);
memset(&root->root_key, 0, sizeof(root->root_key));
memset(&root->root_item, 0, sizeof(root->root_item));
return root;
}
-struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
- u64 root_objectid)
-{
- struct btrfs_root *root;
-
- if (root_objectid == BTRFS_ROOT_TREE_OBJECTID)
- return fs_info->tree_root;
- if (root_objectid == BTRFS_EXTENT_TREE_OBJECTID)
- return fs_info->extent_root;
-
- root = radix_tree_lookup(&fs_info->fs_roots_radix,
- (unsigned long)root_objectid);
- return root;
-}
-
struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
struct btrfs_key *location)
{
if (IS_ERR(root))
return root;
- set_anon_super(&root->anon_super, NULL);
+ root->free_ino_ctl = kzalloc(sizeof(*root->free_ino_ctl), GFP_NOFS);
+ root->free_ino_pinned = kzalloc(sizeof(*root->free_ino_pinned),
+ GFP_NOFS);
+ if (!root->free_ino_pinned || !root->free_ino_ctl) {
+ ret = -ENOMEM;
+ 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);
+
+ ret = set_anon_super(&root->anon_super, NULL);
+ if (ret)
+ goto fail;
if (btrfs_root_refs(&root->root_item) == 0) {
ret = -ENOENT;
return ERR_PTR(ret);
}
-struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
- struct btrfs_key *location,
- const char *name, int namelen)
-{
- return btrfs_read_fs_root_no_name(fs_info, location);
-#if 0
- struct btrfs_root *root;
- int ret;
-
- root = btrfs_read_fs_root_no_name(fs_info, location);
- if (!root)
- return NULL;
-
- if (root->in_sysfs)
- return root;
-
- ret = btrfs_set_root_name(root, name, namelen);
- if (ret) {
- free_extent_buffer(root->node);
- kfree(root);
- return ERR_PTR(ret);
- }
-
- ret = btrfs_sysfs_add_root(root);
- if (ret) {
- free_extent_buffer(root->node);
- kfree(root->name);
- kfree(root);
- return ERR_PTR(ret);
- }
- root->in_sysfs = 1;
- return root;
-#endif
-}
-
static int btrfs_congested_fn(void *congested_data, int bdi_bits)
{
struct btrfs_fs_info *info = (struct btrfs_fs_info *)congested_data;
struct btrfs_device *device;
struct backing_dev_info *bdi;
- list_for_each_entry(device, &info->fs_devices->devices, dev_list) {
+ rcu_read_lock();
+ list_for_each_entry_rcu(device, &info->fs_devices->devices, dev_list) {
if (!device->bdev)
continue;
bdi = blk_get_backing_dev_info(device->bdev);
break;
}
}
+ rcu_read_unlock();
return ret;
}
btrfs_run_delayed_iputs(root);
btrfs_clean_old_snapshots(root);
mutex_unlock(&root->fs_info->cleaner_mutex);
+ btrfs_run_defrag_inodes(root->fs_info);
}
if (freezing(current)) {
vfs_check_frozen(root->fs_info->sb, SB_FREEZE_WRITE);
mutex_lock(&root->fs_info->transaction_kthread_mutex);
- spin_lock(&root->fs_info->new_trans_lock);
+ spin_lock(&root->fs_info->trans_lock);
cur = root->fs_info->running_transaction;
if (!cur) {
- spin_unlock(&root->fs_info->new_trans_lock);
+ spin_unlock(&root->fs_info->trans_lock);
goto sleep;
}
now = get_seconds();
if (!cur->blocked &&
(now < cur->start_time || now - cur->start_time < 30)) {
- spin_unlock(&root->fs_info->new_trans_lock);
+ spin_unlock(&root->fs_info->trans_lock);
delay = HZ * 5;
goto sleep;
}
transid = cur->transid;
- spin_unlock(&root->fs_info->new_trans_lock);
+ spin_unlock(&root->fs_info->trans_lock);
- trans = btrfs_join_transaction(root, 1);
+ trans = btrfs_join_transaction(root);
BUG_ON(IS_ERR(trans));
if (transid == trans->transid) {
ret = btrfs_commit_transaction(trans, root);
struct btrfs_root *csum_root = kzalloc(sizeof(struct btrfs_root),
GFP_NOFS);
struct btrfs_root *tree_root = btrfs_sb(sb);
- struct btrfs_fs_info *fs_info = tree_root->fs_info;
+ struct btrfs_fs_info *fs_info = NULL;
struct btrfs_root *chunk_root = kzalloc(sizeof(struct btrfs_root),
GFP_NOFS);
struct btrfs_root *dev_root = kzalloc(sizeof(struct btrfs_root),
struct btrfs_super_block *disk_super;
- if (!extent_root || !tree_root || !fs_info ||
+ if (!extent_root || !tree_root || !tree_root->fs_info ||
!chunk_root || !dev_root || !csum_root) {
err = -ENOMEM;
goto fail;
}
+ fs_info = tree_root->fs_info;
ret = init_srcu_struct(&fs_info->subvol_srcu);
if (ret) {
INIT_LIST_HEAD(&fs_info->ordered_operations);
INIT_LIST_HEAD(&fs_info->caching_block_groups);
spin_lock_init(&fs_info->delalloc_lock);
- spin_lock_init(&fs_info->new_trans_lock);
+ spin_lock_init(&fs_info->trans_lock);
spin_lock_init(&fs_info->ref_cache_lock);
spin_lock_init(&fs_info->fs_roots_radix_lock);
spin_lock_init(&fs_info->delayed_iput_lock);
+ spin_lock_init(&fs_info->defrag_inodes_lock);
+ mutex_init(&fs_info->reloc_mutex);
init_completion(&fs_info->kobj_unregister);
fs_info->tree_root = tree_root;
atomic_set(&fs_info->async_delalloc_pages, 0);
atomic_set(&fs_info->async_submit_draining, 0);
atomic_set(&fs_info->nr_async_bios, 0);
+ atomic_set(&fs_info->defrag_running, 0);
fs_info->sb = sb;
fs_info->max_inline = 8192 * 1024;
fs_info->metadata_ratio = 0;
+ fs_info->defrag_inodes = RB_ROOT;
+ fs_info->trans_no_join = 0;
fs_info->thread_pool_size = min_t(unsigned long,
num_online_cpus() + 2, 8);
INIT_LIST_HEAD(&fs_info->ordered_extents);
spin_lock_init(&fs_info->ordered_extent_lock);
+ fs_info->delayed_root = kmalloc(sizeof(struct btrfs_delayed_root),
+ GFP_NOFS);
+ if (!fs_info->delayed_root) {
+ err = -ENOMEM;
+ goto fail_iput;
+ }
+ btrfs_init_delayed_root(fs_info->delayed_root);
+
+ mutex_init(&fs_info->scrub_lock);
+ atomic_set(&fs_info->scrubs_running, 0);
+ atomic_set(&fs_info->scrub_pause_req, 0);
+ atomic_set(&fs_info->scrubs_paused, 0);
+ atomic_set(&fs_info->scrub_cancel_req, 0);
+ init_waitqueue_head(&fs_info->scrub_pause_wait);
+ init_rwsem(&fs_info->scrub_super_lock);
+ fs_info->scrub_workers_refcnt = 0;
sb->s_blocksize = 4096;
sb->s_blocksize_bits = blksize_bits(4096);
RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);
extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,
- fs_info->btree_inode->i_mapping,
- GFP_NOFS);
- extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree,
- GFP_NOFS);
+ fs_info->btree_inode->i_mapping);
+ extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree);
BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;
fs_info->block_group_cache_tree = RB_ROOT;
extent_io_tree_init(&fs_info->freed_extents[0],
- fs_info->btree_inode->i_mapping, GFP_NOFS);
+ fs_info->btree_inode->i_mapping);
extent_io_tree_init(&fs_info->freed_extents[1],
- fs_info->btree_inode->i_mapping, GFP_NOFS);
+ fs_info->btree_inode->i_mapping);
fs_info->pinned_extents = &fs_info->freed_extents[0];
fs_info->do_barriers = 1;
- mutex_init(&fs_info->trans_mutex);
mutex_init(&fs_info->ordered_operations_mutex);
mutex_init(&fs_info->tree_log_mutex);
mutex_init(&fs_info->chunk_mutex);
bh = btrfs_read_dev_super(fs_devices->latest_bdev);
if (!bh) {
err = -EINVAL;
- goto fail_iput;
+ goto fail_alloc;
}
memcpy(&fs_info->super_copy, bh->b_data, sizeof(fs_info->super_copy));
disk_super = &fs_info->super_copy;
if (!btrfs_super_root(disk_super))
- goto fail_iput;
+ goto fail_alloc;
/* check FS state, whether FS is broken. */
fs_info->fs_state |= btrfs_super_flags(disk_super);
ret = btrfs_parse_options(tree_root, options);
if (ret) {
err = ret;
- goto fail_iput;
+ goto fail_alloc;
}
features = btrfs_super_incompat_flags(disk_super) &
"unsupported optional features (%Lx).\n",
(unsigned long long)features);
err = -EINVAL;
- goto fail_iput;
+ goto fail_alloc;
}
features = btrfs_super_incompat_flags(disk_super);
"unsupported option features (%Lx).\n",
(unsigned long long)features);
err = -EINVAL;
- goto fail_iput;
+ goto fail_alloc;
}
btrfs_init_workers(&fs_info->generic_worker,
fs_info->thread_pool_size),
&fs_info->generic_worker);
+ btrfs_init_workers(&fs_info->caching_workers, "cache",
+ 2, &fs_info->generic_worker);
+
/* a higher idle thresh on the submit workers makes it much more
* likely that bios will be send down in a sane order to the
* devices
&fs_info->generic_worker);
btrfs_init_workers(&fs_info->endio_freespace_worker, "freespace-write",
1, &fs_info->generic_worker);
+ btrfs_init_workers(&fs_info->delayed_workers, "delayed-meta",
+ fs_info->thread_pool_size,
+ &fs_info->generic_worker);
/*
* endios are largely parallel and should have a very
btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
btrfs_start_workers(&fs_info->endio_write_workers, 1);
btrfs_start_workers(&fs_info->endio_freespace_worker, 1);
+ btrfs_start_workers(&fs_info->delayed_workers, 1);
+ btrfs_start_workers(&fs_info->caching_workers, 1);
fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
btrfs_stop_workers(&fs_info->submit_workers);
+ btrfs_stop_workers(&fs_info->delayed_workers);
+ btrfs_stop_workers(&fs_info->caching_workers);
+fail_alloc:
+ kfree(fs_info->delayed_root);
fail_iput:
invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
iput(fs_info->btree_inode);
if (uptodate) {
set_buffer_uptodate(bh);
} else {
- if (printk_ratelimit()) {
- printk(KERN_WARNING "lost page write due to "
+ printk_ratelimited(KERN_WARNING "lost page write due to "
"I/O error on %s\n",
bdevname(bh->b_bdev, b));
- }
/* note, we dont' set_buffer_write_io_error because we have
* our own ways of dealing with the IO errors
*/
mutex_lock(&root->fs_info->fs_devices->device_list_mutex);
head = &root->fs_info->fs_devices->devices;
- list_for_each_entry(dev, head, dev_list) {
+ list_for_each_entry_rcu(dev, head, dev_list) {
if (!dev->bdev) {
total_errors++;
continue;
}
total_errors = 0;
- list_for_each_entry(dev, head, dev_list) {
+ list_for_each_entry_rcu(dev, head, dev_list) {
if (!dev->bdev)
continue;
if (!dev->in_fs_metadata || !dev->writeable)
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);
}
down_write(&root->fs_info->cleanup_work_sem);
up_write(&root->fs_info->cleanup_work_sem);
- trans = btrfs_join_transaction(root, 1);
+ trans = btrfs_join_transaction(root);
if (IS_ERR(trans))
return PTR_ERR(trans);
ret = btrfs_commit_transaction(trans, root);
BUG_ON(ret);
/* run commit again to drop the original snapshot */
- trans = btrfs_join_transaction(root, 1);
+ trans = btrfs_join_transaction(root);
if (IS_ERR(trans))
return PTR_ERR(trans);
btrfs_commit_transaction(trans, root);
fs_info->closing = 1;
smp_mb();
+ btrfs_scrub_cancel(root);
+
+ /* wait for any defraggers to finish */
+ wait_event(fs_info->transaction_wait,
+ (atomic_read(&fs_info->defrag_running) == 0));
+
+ /* clear out the rbtree of defraggable inodes */
+ btrfs_run_defrag_inodes(root->fs_info);
+
btrfs_put_block_group_cache(fs_info);
/*
del_fs_roots(fs_info);
iput(fs_info->btree_inode);
+ kfree(fs_info->delayed_root);
btrfs_stop_workers(&fs_info->generic_worker);
btrfs_stop_workers(&fs_info->fixup_workers);
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
btrfs_stop_workers(&fs_info->submit_workers);
+ btrfs_stop_workers(&fs_info->delayed_workers);
+ btrfs_stop_workers(&fs_info->caching_workers);
btrfs_close_devices(fs_info->fs_devices);
btrfs_mapping_tree_free(&fs_info->mapping_tree);
u64 num_dirty;
unsigned long thresh = 32 * 1024 * 1024;
+ if (current->flags & PF_MEMALLOC)
+ return;
+
+ btrfs_balance_delayed_items(root);
+
+ num_dirty = root->fs_info->dirty_metadata_bytes;
+
+ if (num_dirty > thresh) {
+ balance_dirty_pages_ratelimited_nr(
+ root->fs_info->btree_inode->i_mapping, 1);
+ }
+ return;
+}
+
+void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
+{
+ /*
+ * looks as though older kernels can get into trouble with
+ * this code, they end up stuck in balance_dirty_pages forever
+ */
+ u64 num_dirty;
+ unsigned long thresh = 32 * 1024 * 1024;
+
if (current->flags & PF_MEMALLOC)
return;
goto out;
len = page->private >> 2;
- eb = find_extent_buffer(io_tree, bytenr, len, GFP_NOFS);
+ eb = find_extent_buffer(io_tree, bytenr, len);
if (!eb)
goto out;
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;
}
INIT_LIST_HEAD(&splice);
- list_splice_init(&root->fs_info->delalloc_inodes, &splice);
-
spin_lock(&root->fs_info->delalloc_lock);
+ list_splice_init(&root->fs_info->delalloc_inodes, &splice);
while (!list_empty(&splice)) {
btrfs_inode = list_entry(splice.next, struct btrfs_inode,
WARN_ON(1);
- mutex_lock(&root->fs_info->trans_mutex);
mutex_lock(&root->fs_info->transaction_kthread_mutex);
+ spin_lock(&root->fs_info->trans_lock);
list_splice_init(&root->fs_info->trans_list, &list);
+ root->fs_info->trans_no_join = 1;
+ spin_unlock(&root->fs_info->trans_lock);
+
while (!list_empty(&list)) {
t = list_entry(list.next, struct btrfs_transaction, list);
if (!t)
t->blocked = 0;
if (waitqueue_active(&root->fs_info->transaction_wait))
wake_up(&root->fs_info->transaction_wait);
- mutex_unlock(&root->fs_info->trans_mutex);
- mutex_lock(&root->fs_info->trans_mutex);
t->commit_done = 1;
if (waitqueue_active(&t->commit_wait))
wake_up(&t->commit_wait);
- mutex_unlock(&root->fs_info->trans_mutex);
-
- mutex_lock(&root->fs_info->trans_mutex);
btrfs_destroy_pending_snapshots(t);
btrfs_destroy_delalloc_inodes(root);
- spin_lock(&root->fs_info->new_trans_lock);
+ spin_lock(&root->fs_info->trans_lock);
root->fs_info->running_transaction = NULL;
- spin_unlock(&root->fs_info->new_trans_lock);
+ spin_unlock(&root->fs_info->trans_lock);
btrfs_destroy_marked_extents(root, &t->dirty_pages,
EXTENT_DIRTY);
kmem_cache_free(btrfs_transaction_cachep, t);
}
+ spin_lock(&root->fs_info->trans_lock);
+ root->fs_info->trans_no_join = 0;
+ spin_unlock(&root->fs_info->trans_lock);
mutex_unlock(&root->fs_info->transaction_kthread_mutex);
- mutex_unlock(&root->fs_info->trans_mutex);
return 0;
}
git.openpandora.org / pandora-kernel.git / blobdiff