From: Debabrata Banerjee <dbanerje@akamai.com>
Date: Wed, 1 May 2019 03:08:15 +0000 (-0400)
Subject: ext4: fix ext4_show_options for file systems w/o journal
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d5258b8a233350bc6cdfd2113d53cf0f1fb3cc1c;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ext4: fix ext4_show_options for file systems w/o journal

commit 50b29d8f033a7c88c5bc011abc2068b1691ab755 upstream.

Instead of removing EXT4_MOUNT_JOURNAL_CHECKSUM from s_def_mount_opt as
I assume was intended, all other options were blown away leading to
_ext4_show_options() output being incorrect.

Fixes: 1e381f60dad9 ("ext4: do not allow journal_opts for fs w/o journal")
Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a6c7ace9cfd1..3261478bfc32 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4034,7 +4034,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 				 "data=, fs mounted w/o journal");
 			goto failed_mount_wq;
 		}
-		sbi->s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM;
+		sbi->s_def_mount_opt &= ~EXT4_MOUNT_JOURNAL_CHECKSUM;
 		clear_opt(sb, JOURNAL_CHECKSUM);
 		clear_opt(sb, DATA_FLAGS);
 		sbi->s_journal = NULL;