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[PATCH] quota: sanitize dentry handling in vfs_quota_on_mount 

Use lookup_one_len instead of opencoding a simplified lookup using
lookup_hash with a fake hash.

Also there's no need anymore for the d_invalidate as we have a completely
valid dentry now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Hellwig 2005-06-23 00:09:16 -07:00 committed by Linus Torvalds
parent 84de856ed3
commit 2fa389c5eb
1 changed files with 1 additions and 8 deletions
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9
fs/dquot.c
View File

@ -1522,11 +1522,10 @@ out_path:
int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
int format_id, int type)
{
struct qstr name = {.name = qf_name, .len = 0, .len = strlen(qf_name)};
struct dentry *dentry;
int error;
dentry = lookup_hash(&name, sb->s_root);
dentry = lookup_one_len(qf_name, sb->s_root, strlen(qf_name));
if (IS_ERR(dentry))
return PTR_ERR(dentry);
@ -1534,12 +1533,6 @@ int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
if (!error)
error = vfs_quota_on_inode(dentry->d_inode, type, format_id);
/*
* Now invalidate and put the dentry - quota got its own reference
* to inode and dentry has at least wrong hash so we had better
* throw it away.
*/
d_invalidate(dentry);
dput(dentry);
return error;
}