gfs2: bugger off early if O_CREAT open finds a directory

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index c4ed823d150e..310e2487239d 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -624,6 +624,11 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
         inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl);
         error = PTR_ERR(inode);
         if (!IS_ERR(inode)) {
+                if (S_ISDIR(inode->i_mode)) {
+                        iput(inode);
+                        inode = ERR_PTR(-EISDIR);
+                        goto fail_gunlock;
+                }
                 d = d_splice_alias(inode, dentry);
                 error = PTR_ERR(d);
                 if (IS_ERR(d)) {