linux-kernel - [V9fs-developer] [PATCH] fs/9p: don't set SB

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Message-ID: <5AB9A377.6080906@huawei.com>
Date:   Tue, 27 Mar 2018 09:50:47 +0800
From:   jiangyiwen <jiangyiwen@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Eric Van Hensbergen <ericvh@...il.com>,
        Ron Minnich <rminnich@...dia.gov>,
        Latchesar Ionkov <lucho@...kov.net>
CC:     <linux-kernel@...r.kernel.org>,
        <v9fs-developer@...ts.sourceforge.net>, Greg Kurz <groug@...d.org>
Subject: [V9fs-developer] [PATCH] fs/9p: don't set SB_NOATIME by default

User use some syscall, for example mmap(v9fs_file_mmap), it will not
update atime even if user's mnt_flags without MNT_NOATIME, because
v9fs default set SB_NOATIME in v9fs_set_super.

For supporting access time is updated when user mount with relatime,
we should not set SB_NOATIME by default.

Signed-off-by: Yiwen Jiang <jiangyiwen@...wei.com>
Reviewed-by: Greg Kurz <groug@...d.org>
---
 fs/9p/vfs_super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index af03c2a..48ce504 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -94,7 +94,7 @@ static int v9fs_set_super(struct super_block *s, void *data)
 	if (v9ses->cache)
 		sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024)/PAGE_SIZE;

-	sb->s_flags |= SB_ACTIVE | SB_DIRSYNC | SB_NOATIME;
+	sb->s_flags |= SB_ACTIVE | SB_DIRSYNC;
 	if (!v9ses->cache)
 		sb->s_flags |= SB_SYNCHRONOUS;

-- 
1.8.3.1