svn commit: r188901 - user/alc/pagelock/sys/vm
Alan Cox
alc at FreeBSD.org
Sat Feb 21 13:02:54 PST 2009
Author: alc
Date: Sat Feb 21 21:02:53 2009
New Revision: 188901
URL: http://svn.freebsd.org/changeset/base/188901
Log:
Eliminate page queues locking from vm_object_page_clean().
Modified:
user/alc/pagelock/sys/vm/vm_object.c
Modified: user/alc/pagelock/sys/vm/vm_object.c
==============================================================================
--- user/alc/pagelock/sys/vm/vm_object.c Sat Feb 21 20:57:25 2009 (r188900)
+++ user/alc/pagelock/sys/vm/vm_object.c Sat Feb 21 21:02:53 2009 (r188901)
@@ -740,7 +740,6 @@ vm_object_page_clean(vm_object_t object,
tend = end;
}
- vm_page_lock_queues();
/*
* If the caller is smart and only msync()s a range he knows is
* dirty, we may be able to avoid an object scan. This results in
@@ -802,7 +801,6 @@ vm_object_page_clean(vm_object_t object,
* return immediately.
*/
if (tscan >= tend && (tstart || tend < object->size)) {
- vm_page_unlock_queues();
vm_object_clear_flag(object, OBJ_CLEANING);
return;
}
@@ -889,7 +887,6 @@ again:
goto again;
}
}
- vm_page_unlock_queues();
#if 0
VOP_FSYNC(vp, (pagerflags & VM_PAGER_PUT_SYNC)?MNT_WAIT:0, curproc);
#endif
@@ -911,10 +908,8 @@ vm_object_page_collect_flush(vm_object_t
vm_page_t mab[vm_pageout_page_count];
vm_page_t ma[vm_pageout_page_count];
- mtx_assert(&vm_page_queue_mtx, MA_OWNED);
pi = p->pindex;
while (vm_page_sleep_if_busy(p, TRUE, "vpcwai")) {
- vm_page_lock_queues();
if (object->generation != curgeneration) {
return(0);
}
@@ -980,7 +975,9 @@ vm_object_page_collect_flush(vm_object_t
}
runlen = maxb + maxf + 1;
+ vm_page_lock_queues();
vm_pageout_flush(ma, runlen, pagerflags);
+ vm_page_unlock_queues();
for (i = 0; i < runlen; i++) {
if (ma[i]->valid & ma[i]->dirty) {
pmap_remove_write(ma[i]);
More information about the svn-src-user
mailing list