#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/fs.h>
+#include <linux/rwsem.h>
#include <linux/completion.h>
#include <linux/backing-dev.h>
#include <linux/wait.h>
#include "extent_io.h"
#include "extent_map.h"
#include "async-thread.h"
+#include "ioctl.h"
struct btrfs_trans_handle;
struct btrfs_transaction;
/* 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
struct extent_map_tree map_tree;
};
-#define BTRFS_UUID_SIZE 16
struct btrfs_dev_item {
/* the internal btrfs device id */
__le64 devid;
sizeof(struct btrfs_stripe) * (num_stripes - 1);
}
-#define BTRFS_FSID_SIZE 16
#define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0)
#define BTRFS_HEADER_FLAG_RELOC (1ULL << 1)
/* use full backrefs for extent pointers in the block */
#define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8)
+/*
+ * this flag is only used internally by scrub and may be changed at any time
+ * it is only declared here to avoid collisions
+ */
+#define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48)
+
struct btrfs_tree_block_info {
struct btrfs_disk_key key;
u8 level;
*/
unsigned long reservation_progress;
- int full:1; /* indicates that we cannot allocate any more
+ unsigned int full:1; /* indicates that we cannot allocate any more
chunks for this space */
- int chunk_alloc:1; /* set if we are allocating a chunk */
+ unsigned int chunk_alloc:1; /* set if we are allocating a chunk */
- int force_alloc; /* set if we need to force a chunk alloc for
- this space */
+ unsigned int force_alloc; /* set if we need to force a chunk
+ alloc for this space */
struct list_head list;
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;
struct reloc_control;
struct btrfs_device;
struct btrfs_fs_devices;
+struct btrfs_delayed_root;
struct btrfs_fs_info {
u8 fsid[BTRFS_FSID_SIZE];
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
/* logical->physical extent mapping */
struct btrfs_mapping_tree mapping_tree;
- /* block reservation for extent, checksum and root tree */
+ /*
+ * block reservation for extent, checksum, root tree and
+ * delayed dir index item
+ */
struct btrfs_block_rsv global_block_rsv;
/* block reservation for delay allocation */
struct btrfs_block_rsv delalloc_block_rsv;
* is required instead of the faster short fsync log commits
*/
u64 last_trans_log_full_commit;
- u64 open_ioctl_trans;
unsigned long mount_opt:20;
unsigned long compress_type:4;
u64 max_inline;
struct super_block *sb;
struct inode *btree_inode;
struct backing_dev_info bdi;
- struct mutex trans_mutex;
struct mutex tree_log_mutex;
struct mutex transaction_kthread_mutex;
struct mutex cleaner_mutex;
struct rw_semaphore subvol_sem;
struct srcu_struct subvol_srcu;
+ spinlock_t trans_lock;
struct list_head trans_list;
struct list_head hashers;
struct list_head dead_roots;
atomic_t async_submit_draining;
atomic_t nr_async_bios;
atomic_t async_delalloc_pages;
+ atomic_t open_ioctl_trans;
/*
* this is used by the balancing code to wait for all the pending
* for the sys_munmap function call path
*/
struct btrfs_workers fixup_workers;
+ struct btrfs_workers delayed_workers;
struct task_struct *transaction_kthread;
struct task_struct *cleaner_kthread;
int thread_pool_size;
int closing;
int log_root_recovering;
int enospc_unlink;
+ int trans_no_join;
u64 total_pinned;
struct reloc_control *reloc_ctl;
spinlock_t delalloc_lock;
- spinlock_t new_trans_lock;
u64 delalloc_bytes;
/* data_alloc_cluster is only used in ssd mode */
/* all metadata allocations go through this cluster */
struct btrfs_free_cluster meta_alloc_cluster;
+ /* auto defrag inodes go here */
+ spinlock_t defrag_inodes_lock;
+ struct rb_root defrag_inodes;
+ atomic_t defrag_running;
+
spinlock_t ref_cache_lock;
u64 total_ref_cache_size;
void *bdev_holder;
+ /* private scrub information */
+ struct mutex scrub_lock;
+ atomic_t scrubs_running;
+ atomic_t scrub_pause_req;
+ atomic_t scrubs_paused;
+ atomic_t scrub_cancel_req;
+ wait_queue_head_t scrub_pause_wait;
+ struct rw_semaphore scrub_super_lock;
+ int scrub_workers_refcnt;
+ struct btrfs_workers scrub_workers;
+
/* filesystem state */
u64 fs_state;
+
+ struct btrfs_delayed_root *delayed_root;
};
/*
struct btrfs_root {
struct extent_buffer *node;
- /* the node lock is held while changing the node pointer */
- spinlock_t node_lock;
-
struct extent_buffer *commit_root;
struct btrfs_root *log_root;
struct btrfs_root *reloc_root;
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];
/* red-black tree that keeps track of in-memory inodes */
struct rb_root inode_tree;
+ /*
+ * radix tree that keeps track of delayed nodes of every inode,
+ * protected by inode_lock
+ */
+ struct radix_tree_root delayed_nodes_tree;
/*
* right now this just gets used so that a root has its own devid
* for stat. It may be used for more later
struct super_block anon_super;
};
+struct btrfs_ioctl_defrag_range_args {
+ /* start of the defrag operation */
+ __u64 start;
+
+ /* number of bytes to defrag, use (u64)-1 to say all */
+ __u64 len;
+
+ /*
+ * flags for the operation, which can include turning
+ * on compression for this one defrag
+ */
+ __u64 flags;
+
+ /*
+ * any extent bigger than this will be considered
+ * already defragged. Use 0 to take the kernel default
+ * Use 1 to say every single extent must be rewritten
+ */
+ __u32 extent_thresh;
+
+ /*
+ * which compression method to use if turning on compression
+ * for this defrag operation. If unspecified, zlib will
+ * be used
+ */
+ __u32 compress_type;
+
+ /* spare for later */
+ __u32 unused[4];
+};
+
+
/*
* inode items have the data typically returned from stat and store other
* info about object characteristics. There is one for every file and dir in
#define BTRFS_MOUNT_CLEAR_CACHE (1 << 13)
#define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
#define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15)
+#define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16)
+#define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
}
-static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
- struct btrfs_chunk *c, int nr,
- u64 val)
-{
- btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
-}
-
static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
struct btrfs_chunk *c, int nr)
{
return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
}
-static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
- struct btrfs_chunk *c, int nr,
- u64 val)
-{
- btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
-}
-
/* struct btrfs_block_group_item */
BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
used, 64);
return (struct btrfs_timespec *)ptr;
}
-static inline struct btrfs_timespec *
-btrfs_inode_otime(struct btrfs_inode_item *inode_item)
-{
- unsigned long ptr = (unsigned long)inode_item;
- ptr += offsetof(struct btrfs_inode_item, otime);
- return (struct btrfs_timespec *)ptr;
-}
-
BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
return (u8 *)ptr;
}
-static inline u8 *btrfs_super_fsid(struct extent_buffer *eb)
-{
- unsigned long ptr = offsetof(struct btrfs_super_block, fsid);
- return (u8 *)ptr;
-}
-
-static inline u8 *btrfs_header_csum(struct extent_buffer *eb)
-{
- unsigned long ptr = offsetof(struct btrfs_header, csum);
- return (u8 *)ptr;
-}
-
-static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb)
-{
- return NULL;
-}
-
-static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb)
-{
- return NULL;
-}
-
-static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb)
-{
- return NULL;
-}
-
static inline int btrfs_is_leaf(struct extent_buffer *eb)
{
return btrfs_header_level(eb) == 0;
return sb->s_fs_info;
}
-static inline int btrfs_set_root_name(struct btrfs_root *root,
- const char *name, int len)
-{
- /* if we already have a name just free it */
- kfree(root->name);
-
- root->name = kmalloc(len+1, GFP_KERNEL);
- if (!root->name)
- return -ENOMEM;
-
- memcpy(root->name, name, len);
- root->name[len] = '\0';
-
- return 0;
-}
-
static inline u32 btrfs_level_size(struct btrfs_root *root, int level)
{
if (level == 0)
}
/* extent-tree.c */
+static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root,
+ int num_items)
+{
+ return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) *
+ 3 * num_items;
+}
+
void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
struct btrfs_root *root, unsigned long count);
u64 num_bytes, u64 *refs, u64 *flags);
int btrfs_pin_extent(struct btrfs_root *root,
u64 bytenr, u64 num, int reserved);
-int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, struct extent_buffer *leaf);
int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 offset, u64 bytenr);
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
struct btrfs_block_group_cache *btrfs_lookup_block_group(
struct btrfs_fs_info *info,
u64 bytenr);
void btrfs_block_rsv_release(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
+int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_block_rsv *rsv);
int btrfs_set_block_group_ro(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
int btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_root *root, struct extent_buffer *parent,
int start_slot, int cache_only, u64 *last_ret,
struct btrfs_key *progress);
-void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
+void btrfs_release_path(struct btrfs_path *p);
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
void btrfs_set_path_blocking(struct btrfs_path *p);
+void btrfs_clear_path_blocking(struct btrfs_path *p,
+ struct extent_buffer *held);
void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
return btrfs_del_items(trans, root, path, path->slots[0], 1);
}
+int setup_items_for_insert(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct btrfs_path *path,
+ struct btrfs_key *cpu_key, u32 *data_size,
+ u32 total_data, u32 total_size, int nr);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, void *data, u32 data_size);
-int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- struct btrfs_key *cpu_key, u32 *data_size,
- int nr);
int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_root *root,
struct extent_buffer *node,
struct extent_buffer *parent);
+static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
+{
+ /*
+ * Get synced with close_ctree()
+ */
+ smp_mb();
+ return fs_info->closing;
+}
+
/* root-item.c */
int btrfs_find_root_ref(struct btrfs_root *tree_root,
struct btrfs_path *path,
*item);
int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct
btrfs_root_item *item, struct btrfs_key *key);
-int btrfs_search_root(struct btrfs_root *root, u64 search_start,
- u64 *found_objectid);
int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid);
int btrfs_find_orphan_roots(struct btrfs_root *tree_root);
int btrfs_set_root_node(struct btrfs_root_item *item,
/* dir-item.c */
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *name,
- int name_len, u64 dir,
+ int name_len, struct inode *dir,
struct btrfs_key *location, u8 type, u64 index);
struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
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,
struct btrfs_ordered_sum *sums);
int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
struct bio *bio, u64 file_start, int contig);
-int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode,
- u64 start, unsigned long len);
struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
int btrfs_csum_truncate(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u64 isize);
-int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start,
- u64 end, struct list_head *list);
+int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
+ struct list_head *list, int search_commit);
/* inode.c */
/* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
u32 min_type);
int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
-int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput,
- int sync);
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
struct extent_state **cached_state);
int btrfs_writepages(struct address_space *mapping,
struct writeback_control *wbc);
int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
- struct btrfs_root *new_root,
- u64 new_dirid, u64 alloc_hint);
+ struct btrfs_root *new_root, u64 new_dirid);
int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
size_t size, struct bio *bio, unsigned long bio_flags);
int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
int btrfs_readpage(struct file *file, struct page *page);
void btrfs_evict_inode(struct inode *inode);
-void btrfs_put_inode(struct inode *inode);
int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
-void btrfs_dirty_inode(struct inode *inode);
+void btrfs_dirty_inode(struct inode *inode, int flags);
struct inode *btrfs_alloc_inode(struct super_block *sb);
void btrfs_destroy_inode(struct inode *inode);
int btrfs_drop_inode(struct inode *inode);
long btrfs_ioctl_trans_end(struct file *file);
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
struct btrfs_root *root, int *was_new);
-int btrfs_commit_write(struct file *file, struct page *page,
- unsigned from, unsigned to);
struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
- size_t page_offset, u64 start, u64 end,
+ size_t pg_offset, u64 start, u64 end,
int create);
int btrfs_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
void btrfs_update_iflags(struct inode *inode);
void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
-
+int btrfs_defrag_file(struct inode *inode, struct file *file,
+ struct btrfs_ioctl_defrag_range_args *range,
+ u64 newer_than, unsigned long max_pages);
/* file.c */
+int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
+ struct inode *inode);
+int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
int btrfs_sync_file(struct file *file, int datasync);
int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
int skip_pinned);
-int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
extern const struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
u64 start, u64 end, u64 *hint_byte, int drop_cache);
/* sysfs.c */
int btrfs_init_sysfs(void);
void btrfs_exit_sysfs(void);
-int btrfs_sysfs_add_super(struct btrfs_fs_info *fs);
-int btrfs_sysfs_add_root(struct btrfs_root *root);
-void btrfs_sysfs_del_root(struct btrfs_root *root);
-void btrfs_sysfs_del_super(struct btrfs_fs_info *root);
/* xattr.c */
ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
u64 *bytes_to_reserve);
void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_pending_snapshot *pending);
+
+/* scrub.c */
+int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end,
+ struct btrfs_scrub_progress *progress, int readonly);
+int btrfs_scrub_pause(struct btrfs_root *root);
+int btrfs_scrub_pause_super(struct btrfs_root *root);
+int btrfs_scrub_continue(struct btrfs_root *root);
+int btrfs_scrub_continue_super(struct btrfs_root *root);
+int btrfs_scrub_cancel(struct btrfs_root *root);
+int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev);
+int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid);
+int btrfs_scrub_progress(struct btrfs_root *root, u64 devid,
+ struct btrfs_scrub_progress *progress);
+
#endif
git.openpandora.org / pandora-kernel.git / blobdiff