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GFS2: fix dentry leaks 

We need to dput() the result of d_splice_alias(), unless it is passed to
finish_no_open().

Edited by Steven Whitehouse in order to make it apply to the current
GFS2 git tree, and taking account of a prerequisite patch which hasn't
been applied.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Miklos Szeredi 2013-09-23 13:21:04 +01:00 committed by Steven Whitehouse
parent 149ed7f51e
commit 5ca1db41ec
1 changed files with 16 additions and 10 deletions
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26
fs/gfs2/inode.c
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@ -585,12 +585,14 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
d = d_splice_alias(inode, dentry);
error = 0;
if (file) {
if (d == NULL)
d = dentry;
if (S_ISREG(inode->i_mode))
error = finish_open(file, d, gfs2_open_common, opened);
else
if (S_ISREG(inode->i_mode)) {
WARN_ON(d != NULL);
error = finish_open(file, dentry, gfs2_open_common, opened);
} else {
error = finish_no_open(file, d);
}
} else {
dput(d);
}
gfs2_glock_dq_uninit(ghs);
return error;
@ -777,8 +779,10 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
error = finish_open(file, dentry, gfs2_open_common, opened);
gfs2_glock_dq_uninit(&gh);
if (error)
if (error) {
dput(d);
return ERR_PTR(error);
}
return d;
}
@ -1159,14 +1163,16 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
d = __gfs2_lookup(dir, dentry, file, opened);
if (IS_ERR(d))
return PTR_ERR(d);
if (d == NULL)
d = dentry;
if (d->d_inode) {
if (d != NULL)
dentry = d;
if (dentry->d_inode) {
if (!(*opened & FILE_OPENED))
return finish_no_open(file, d);
return finish_no_open(file, dentry);
dput(d);
return 0;
}
BUG_ON(d != NULL);
if (!(flags & O_CREAT))
return -ENOENT;