[src/trunk]: src/sys/ufs/lfs stopgap fix- move lfs_lock to include calls to l...

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

details:   https://anonhg.NetBSD.org/src/rev/2bbd864713e4
branches:  trunk
changeset: 822687:2bbd864713e4
user:      maya <maya%NetBSD.org@localhost>
date:      Fri Mar 31 23:00:21 2017 +0000

description:
stopgap fix- move lfs_lock to include calls to lfs_dino_{set,get}block

blocks new users that need seglock (need to take lfs_lock) that
setblock before the assert (truncate to 0 but 31 blks/31 effblks)

not proper, but lets me run firefox on lfs

diffstat:

 sys/ufs/lfs/lfs_inode.c |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (40 lines):

diff -r cf69c517d1f5 -r 2bbd864713e4 sys/ufs/lfs/lfs_inode.c
--- a/sys/ufs/lfs/lfs_inode.c   Fri Mar 31 21:07:02 2017 +0000
+++ b/sys/ufs/lfs/lfs_inode.c   Fri Mar 31 23:00:21 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lfs_inode.c,v 1.153 2017/03/21 09:53:00 maya Exp $     */
+/*     $NetBSD: lfs_inode.c,v 1.154 2017/03/31 23:00:21 maya Exp $     */
 
 /*-
  * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
@@ -60,7 +60,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: lfs_inode.c,v 1.153 2017/03/21 09:53:00 maya Exp $");
+__KERNEL_RCSID(0, "$NetBSD: lfs_inode.c,v 1.154 2017/03/31 23:00:21 maya Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_quota.h"
@@ -573,11 +573,11 @@
        oip->i_size = length;
        lfs_dino_setsize(fs, oip->i_din, oip->i_size);
        oip->i_lfs_effnblks -= blocksreleased;
+
+       mutex_enter(&lfs_lock);
        lfs_dino_setblocks(fs, oip->i_din,
            lfs_dino_getblocks(fs, oip->i_din) - real_released);
-       mutex_enter(&lfs_lock);
        lfs_sb_addbfree(fs, blocksreleased);
-       mutex_exit(&lfs_lock);
 
        KASSERTMSG((oip->i_size != 0 ||
                lfs_dino_getblocks(fs, oip->i_din) == 0),
@@ -592,7 +592,6 @@
        /*
         * If we truncated to zero, take us off the paging queue.
         */
-       mutex_enter(&lfs_lock);
        if (oip->i_size == 0 && oip->i_flags & IN_PAGING) {
                oip->i_flags &= ~IN_PAGING;
                TAILQ_REMOVE(&fs->lfs_pchainhd, oip, i_lfs_pchain);