svn commit: r300084 - head/sys/ufs/ffs

[Konstantin Belousov]

Author: kib
Date: Tue May 17 21:35:35 2016
New Revision: 300084
URL: https://svnweb.freebsd.org/changeset/base/300084

Log:
  Do enable io accounting for read-only mounts and mounts which are
  remounted to writeable after initial read-only.  Assign to
  dev->si_mountpt earlier to account the accesses done at the mount
  time.
  
  Based on submission by:	bde
  MFC after:	1 week

Modified:
  head/sys/ufs/ffs/ffs_vfsops.c

Modified: head/sys/ufs/ffs/ffs_vfsops.c
==============================================================================
--- head/sys/ufs/ffs/ffs_vfsops.c	Tue May 17 21:30:58 2016	(r300083)
+++ head/sys/ufs/ffs/ffs_vfsops.c	Tue May 17 21:35:35 2016	(r300084)
@@ -780,6 +780,8 @@ ffs_mountfs(devvp, mp, td)
 		mp->mnt_iosize_max = MAXPHYS;
 
 	devvp->v_bufobj.bo_ops = &ffs_ops;
+	if (devvp->v_type == VCHR)
+		devvp->v_rdev->si_mountpt = mp;
 
 	fs = NULL;
 	sblockloc = 0;
@@ -1049,8 +1051,6 @@ ffs_mountfs(devvp, mp, td)
 			ffs_flushfiles(mp, FORCECLOSE, td);
 			goto out;
 		}
-		if (devvp->v_type == VCHR && devvp->v_rdev != NULL)
-			devvp->v_rdev->si_mountpt = mp;
 		if (fs->fs_snapinum[0] != 0)
 			ffs_snapshot_mount(mp);
 		fs->fs_fmod = 1;
@@ -1083,6 +1083,8 @@ ffs_mountfs(devvp, mp, td)
 out:
 	if (bp)
 		brelse(bp);
+	if (devvp->v_type == VCHR && devvp->v_rdev != NULL)
+		devvp->v_rdev->si_mountpt = NULL;
 	if (cp != NULL) {
 		DROP_GIANT();
 		g_topology_lock();