summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJohn Baldwin <jhb@FreeBSD.org>2009-02-06 16:05:00 +0000
committerJohn Baldwin <jhb@FreeBSD.org>2009-02-06 16:05:00 +0000
commit95587158650a7eca428b14fc09ef1c68e850c81f (patch)
treef739387399e78d17003418d040f5e03b9e3a6645
parenta6d1e52c1a073e9ac0cbd78c0a547984e8904cc2 (diff)
Notes
-rw-r--r--sys/kern/vfs_subr.c14
1 files changed, 3 insertions, 11 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index d06907940332..a1033b5c2453 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -717,15 +717,13 @@ static void
vnlru_proc(void)
{
struct mount *mp, *nmp;
- int done;
+ int done, vfslocked;
struct proc *p = vnlruproc;
struct thread *td = curthread;
EVENTHANDLER_REGISTER(shutdown_pre_sync, kproc_shutdown, p,
SHUTDOWN_PRI_FIRST);
- mtx_lock(&Giant);
-
for (;;) {
kthread_suspend_check(p);
mtx_lock(&vnode_free_list_mtx);
@@ -742,19 +740,13 @@ vnlru_proc(void)
done = 0;
mtx_lock(&mountlist_mtx);
for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
- int vfsunlocked;
if (vfs_busy(mp, LK_NOWAIT, &mountlist_mtx, td)) {
nmp = TAILQ_NEXT(mp, mnt_list);
continue;
}
- if (!VFS_NEEDSGIANT(mp)) {
- mtx_unlock(&Giant);
- vfsunlocked = 1;
- } else
- vfsunlocked = 0;
+ vfslocked = VFS_LOCK_GIANT(mp);
done += vlrureclaim(mp);
- if (vfsunlocked)
- mtx_lock(&Giant);
+ VFS_UNLOCK_GIANT(vfslocked);
mtx_lock(&mountlist_mtx);
nmp = TAILQ_NEXT(mp, mnt_list);
vfs_unbusy(mp, td);