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Btrfs: remove negative dentry when deleting subvolumne

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The use of btrfs_dentry_delete is removing dentries from the
dcache when deleting subvolumne. btrfs_dentry_delete ignores
negative dentries. This is incorrect since if we don't remove
the negative dentry, its parent dentry can't be removed.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Yan, Zheng 2009-10-09 09:25:16 -04:00 committed by Chris Mason
parent ff782e0a13
commit efefb1438b
2 changed files with 8 additions and 5 deletions
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12
fs/btrfs/inode.c
View file

@ -3629,12 +3629,14 @@ static int btrfs_dentry_delete(struct dentry *dentry)
{
struct btrfs_root *root;
if (!dentry->d_inode)
return 0;
if (!dentry->d_inode && !IS_ROOT(dentry))
dentry = dentry->d_parent;
root = BTRFS_I(dentry->d_inode)->root;
if (btrfs_root_refs(&root->root_item) == 0)
return 1;
if (dentry->d_inode) {
root = BTRFS_I(dentry->d_inode)->root;
if (btrfs_root_refs(&root->root_item) == 0)
return 1;
}
return 0;
}

1
fs/btrfs/ioctl.c
View file

@ -830,6 +830,7 @@ out_up_write:
out_unlock:
mutex_unlock(&inode->i_mutex);
if (!err) {
shrink_dcache_sb(root->fs_info->sb);
btrfs_invalidate_inodes(dest);
d_delete(dentry);
}