[src/prg-localcount2]: src/sys/ufs/ext2fs Adapt for bdevsw_lookup_acquire()

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f9a1fc010c5f
branches:  prg-localcount2
changeset: 823552:f9a1fc010c5f
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Wed May 17 04:08:36 2017 +0000

description:
Adapt for bdevsw_lookup_acquire()

diffstat:

 sys/ufs/ext2fs/ext2fs_vfsops.c |  14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diffs (42 lines):

diff -r 5bfb6577237d -r f9a1fc010c5f sys/ufs/ext2fs/ext2fs_vfsops.c
--- a/sys/ufs/ext2fs/ext2fs_vfsops.c    Wed May 17 03:54:20 2017 +0000
+++ b/sys/ufs/ext2fs/ext2fs_vfsops.c    Wed May 17 04:08:36 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ext2fs_vfsops.c,v 1.208 2017/04/17 08:32:01 hannken Exp $      */
+/*     $NetBSD: ext2fs_vfsops.c,v 1.208.2.1 2017/05/17 04:08:36 pgoyette Exp $ */
 
 /*
  * Copyright (c) 1989, 1991, 1993, 1994
@@ -60,7 +60,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ext2fs_vfsops.c,v 1.208 2017/04/17 08:32:01 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ext2fs_vfsops.c,v 1.208.2.1 2017/05/17 04:08:36 pgoyette Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_compat_netbsd.h"
@@ -301,6 +301,7 @@
 int
 ext2fs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
 {
+       const struct bdevsw devsw;
        struct lwp *l = curlwp;
        struct vnode *devvp;
        struct ufs_args *args = data;
@@ -342,8 +343,13 @@
                         */
                        if (devvp->v_type != VBLK)
                                error = ENOTBLK;
-                       else if (bdevsw_lookup(devvp->v_rdev) == NULL)
-                               error = ENXIO;
+                       else {
+                               devsw = bdevsw_lookup_acquire(devvp->v_rdev);
+                               if (devsw == NULL)
+                                       error = ENXIO;
+                               else
+                                       bdevsw_release(devsw);
+                       }
                } else {
                        /*
                         * Be sure we're still naming the same device