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| author | Zheng Yan <zheng.yan@oracle.com> | 2008-09-26 18:05:38 +0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-26 18:05:38 +0400 |
| commit | 5b21f2ed3f2947b5195b65c9fdbdd9e52904cc03 (patch) | |
| tree | 9af8f539ac487c163f3207bc065767c3c8b37ae7 /fs/btrfs/ioctl.c | |
| parent | e465768938f95388723b0fd3c50a0ae48173edb9 (diff) | |
| download | linux-5b21f2ed3f2947b5195b65c9fdbdd9e52904cc03.tar.xz | |
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/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 4c6e0c15754d..04de767a8db2 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -444,12 +444,10 @@ static noinline int btrfs_ioctl_snap_create(struct btrfs_root *root, goto out; } - mutex_lock(&root->fs_info->drop_mutex); if (root == root->fs_info->tree_root) ret = create_subvol(root, vol_args->name, namelen); else ret = create_snapshot(root, vol_args->name, namelen); - mutex_unlock(&root->fs_info->drop_mutex); out: kfree(vol_args); return ret; |