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 3212dfa1a50ed56fe1c04e1da29c018520b4f028..2cf16ed5b74c8cc24909bb675e55e07008f0f19a 100644 (file)
--- 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;