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| author | Chris Mason <chris.mason@oracle.com> | 2007-08-07 23:52:19 +0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-08-07 23:52:19 +0400 |
| commit | 9f3a742736cecda5a8778be70faa2f779458839f (patch) | |
| tree | 500ef3701521e63254dbe82e5c71e7ccff746275 /fs/btrfs/ctree.h | |
| parent | 8578f0f1fda41f8429a1037022b720275102ca65 (diff) | |
| download | linux-9f3a742736cecda5a8778be70faa2f779458839f.tar.xz | |
Btrfs: Do snapshot deletion in smaller chunks.
Before, snapshot deletion was a single atomic unit. This caused considerable
lock contention and required an unbounded amount of space. Now,
the drop_progress field in the root item is used to indicate how far along
snapshot deletion is, and to resume where it left off.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 0287bd51d87c..73c2e75a136d 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -333,10 +333,10 @@ struct btrfs_root { u64 objectid; u64 last_trans; u32 blocksize; - int ref_cows; u32 type; u64 highest_inode; u64 last_inode_alloc; + int ref_cows; }; /* the lower bits in the key flags defines the item type */ @@ -1073,7 +1073,7 @@ int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root - *root, struct buffer_head *snap); + *root); /* root-item.c */ int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_key *key); |