linux-ext4 - [PATCH] ext4: fix the incorrect info of /proc/mounts after mount no-journal fs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1305771094-2976-1-git-send-email-sanbai@taobao.com>
Date:	Thu, 19 May 2011 10:11:34 +0800
From:	Robin Dong <hao.bigrat@...il.com>
To:	linux-ext4@...r.kernel.org
Cc:	Robin Dong <sanbai@...bao.com>
Subject: [PATCH] ext4: fix the incorrect info of /proc/mounts after mount no-journal fs

After mkfs without journal:

  # mkfs.ext4 -O ^has_journal /dev/sda
  # mount -t ext4 /dev/sda /test

the /proc/mounts will show:
"/dev/sda /test ext4 rw,relatime,user_xattr,acl,barrier=1,data=writeback 0 0"
which usually make users think the fs is using writeback-mode.

Signed-off-by: Robin Dong <sanbai@...bao.com>
---
 fs/ext4/super.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 8553dfb..4ea1e85 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3474,7 +3474,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		goto failed_mount_wq;
 	} else {
 		clear_opt(sb, DATA_FLAGS);
-		set_opt(sb, WRITEBACK_DATA);
+		if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
+			set_opt(sb, WRITEBACK_DATA);
 		sbi->s_journal = NULL;
 		needs_recovery = 0;
 		goto no_journal;
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html