linux-kernel - [PATCH 04/17] do_remount(): pull touch_mnt

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Message-Id: <E1VRcEg-00088A-8F@ZenIV.linux.org.uk>
Date:	Thu, 03 Oct 2013 07:18:06 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	torvalds@...ux-foundation.org
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 04/17] do_remount(): pull touch_mnt_namespace() up


... and don't bother with dropping and regaining vfsmount_lock

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/namespace.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 09a255d..41663dd 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1849,14 +1849,10 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
 		br_write_lock(&vfsmount_lock);
 		mnt_flags |= mnt->mnt.mnt_flags & MNT_PROPAGATION_MASK;
 		mnt->mnt.mnt_flags = mnt_flags;
-		br_write_unlock(&vfsmount_lock);
-	}
-	up_write(&sb->s_umount);
-	if (!err) {
-		br_write_lock(&vfsmount_lock);
 		touch_mnt_namespace(mnt->mnt_ns);
 		br_write_unlock(&vfsmount_lock);
 	}
+	up_write(&sb->s_umount);
 	return err;
 }
 
-- 
1.7.2.5


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