Commit 0e55a7cc authored Sep 26, 2008 by Dan Williams Committed by Al Viro Oct 23, 2008

[RFC PATCH] touch_mnt_namespace when the mount flags change



Daemons that need to be launched while the rootfs is read-only can now
poll /proc/mounts to be notified when their O_RDWR requests may no
longer end in EROFS.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

parent 91efc167

fs/namespace.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -1550,8 +1550,13 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
		if (!err)
		path->mnt->mnt_flags = mnt_flags;
		up_write(&sb->s_umount);
		if (!err)
		if (!err) {
		security_sb_post_remount(path->mnt, flags, data);

		spin_lock(&vfsmount_lock);
		touch_mnt_namespace(path->mnt->mnt_ns);
		spin_unlock(&vfsmount_lock);
		}
		return err;
		}