diff options
| author | Zheng Yan <zheng.yan@oracle.com> | 2008-09-26 10:05:38 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-26 10:05:38 -0400 |
| commit | 5b21f2ed3f2947b5195b65c9fdbdd9e52904cc03 (patch) | |
| tree | 9af8f539ac487c163f3207bc065767c3c8b37ae7 /fs/btrfs/ctree.h | |
| parent | e465768938f95388723b0fd3c50a0ae48173edb9 (diff) | |
Btrfs: extent_map and data=ordered fixes for space balancing
* Add an EXTENT_BOUNDARY state bit to keep the writepage code
from merging data extents that are in the process of being
relocated. This allows us to do accounting for them properly.
* The balancing code relocates data extents indepdent of the underlying
inode. The extent_map code was modified to properly account for
things moving around (invalidating extent_map caches in the inode).
* Don't take the drop_mutex in the create_subvol ioctl. It isn't
required.
* Fix walking of the ordered extent list to avoid races with sys_unlink
* Change the lock ordering rules. Transaction start goes outside
the drop_mutex. This allows btrfs_commit_transaction to directly
drop the relocation trees.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b9f9f815ed0..3e62a1b0a1f 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1486,6 +1486,9 @@ static inline struct dentry *fdentry(struct file *file) /* extent-tree.c */ int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); +int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, u64 bytenr, + u64 num_bytes, u32 *refs); int btrfs_update_pinned_extents(struct btrfs_root *root, u64 bytenr, u64 num, int pin); int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, @@ -1812,6 +1815,8 @@ void btrfs_destroy_inode(struct inode *inode); int btrfs_init_cachep(void); void btrfs_destroy_cachep(void); long btrfs_ioctl_trans_end(struct file *file); +struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, + struct btrfs_root *root, int wait); struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, struct btrfs_root *root); struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, @@ -1824,13 +1829,17 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, int btrfs_update_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct inode *inode); +int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); +int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); +void btrfs_orphan_cleanup(struct btrfs_root *root); /* ioctl.c */ long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); /* file.c */ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); -int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end); +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 struct file_operations btrfs_file_operations; int btrfs_drop_extents(struct btrfs_trans_handle *trans, |