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ocfs2: Fix refcnt leak on ocfs2_fast_follow_link() error path 

If ->follow_link handler returns an error, it should decrement
nd->path refcnt. But ocfs2_fast_follow_link() doesn't decrement.

This patch fixes the problem by using nd_set_link() style error handling
instead of playing with nd->path.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
OGAWA Hirofumi 2010-01-12 03:37:45 +09:00 committed by Joel Becker
parent 1b4d40a517
commit 1dd473fdf1
1 changed files with 5 additions and 5 deletions
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8
fs/ocfs2/symlink.c
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@ -137,19 +137,19 @@ static void *ocfs2_fast_follow_link(struct dentry *dentry,
}
memcpy(link, target, len);
nd_set_link(nd, link);
bail:
nd_set_link(nd, status ? ERR_PTR(status) : link);
brelse(bh);
mlog_exit(status);
return status ? ERR_PTR(status) : link;
return NULL;
}
static void ocfs2_fast_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
{
char *link = cookie;
char *link = nd_get_link(nd);
if (!IS_ERR(link))
kfree(link);
}