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f2fs: fix wrong error hanlder in f2fs_follow_link 

The page_follow_link_light returns NULL and its error pointer was remained
in nd->path.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-04-22 11:03:48 -07:00
parent 5463e7c18e
commit 7263b1bd04
1 changed files with 3 additions and 5 deletions
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8
fs/f2fs/namei.c
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@ -298,16 +298,14 @@ fail:
static void *f2fs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct page *page;
struct page *page = page_follow_link_light(dentry, nd);
page = page_follow_link_light(dentry, nd);
if (IS_ERR(page))
if (IS_ERR_OR_NULL(page))
return page;
/* this is broken symlink case */
if (*nd_get_link(nd) == 0) {
kunmap(page);
page_cache_release(page);
page_put_link(dentry, nd, page);
return ERR_PTR(-ENOENT);
}
return page;