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Btrfs: use right root when checking for hash collision

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btrfs_rename was using the root of the old dir instead of the root of the new
dir when checking for a hash collision, so if you tried to move a file into a
subvol it would freak out because it would see the file you are trying to move
in its current root.  This fixes the bug where this would fail

btrfs subvol create test1
btrfs subvol create test2
mv test1 test2.

Thanks to Chris Murphy for catching this,

Cc: stable@vger.kernel.org
Reported-by: Chris Murphy <lists@colorremedies.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Josef Bacik 2013-10-09 12:24:04 -04:00 committed by Chris Mason
parent 1357272fc7
commit 4871c1588f
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/inode.c
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@ -7986,7 +7986,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
/* check for collisions, even if the name isn't there */
ret = btrfs_check_dir_item_collision(root, new_dir->i_ino,
ret = btrfs_check_dir_item_collision(dest, new_dir->i_ino,
new_dentry->d_name.name,
new_dentry->d_name.len);