f2fs: don't allow atomic writes for not regular files
The atomic writes only supports regular files for database.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 3212dfa..2cf16ed 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1518,6 +1518,9 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
if (!inode_owner_or_capable(inode))
return -EACCES;
+ if (!S_ISREG(inode->i_mode))
+ return -EINVAL;
+
ret = mnt_want_write_file(filp);
if (ret)
return ret;