Author: kib
Date: Fri Sep 22 10:45:51 2017
New Revision: 323919
URL: https://svnweb.freebsd.org/changeset/base/323919
Log:
MFC r323616:
Batch freeing of the pages in vm_object_page_remove().
Modified:
stable/11/sys/vm/vm_object.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/vm/vm_object.c
==============================================================================
--- stable/11/sys/vm/vm_object.c Fri Sep 22 08:27:27 2017
(r323918)
+++ stable/11/sys/vm/vm_object.c Fri Sep 22 10:45:51 2017
(r323919)
@@ -1960,6 +1960,7 @@ vm_object_page_remove(vm_object_t object, vm_pindex_t
{
vm_page_t p, next;
struct mtx *mtx;
+ struct pglist pgl;
VM_OBJECT_ASSERT_WLOCKED(object);
KASSERT((object->flags & OBJ_UNMANAGED) == 0 ||
@@ -1968,6 +1969,7 @@ vm_object_page_remove(vm_object_t object, vm_pindex_t
if (object->resident_page_count == 0)
return;
vm_object_pip_add(object, 1);
+ TAILQ_INIT(&pgl);
again:
p = vm_page_find_least(object, start);
mtx = NULL;
@@ -2019,10 +2021,13 @@ again:
}
if ((options & OBJPR_NOTMAPPED) == 0)
pmap_remove_all(p);
- vm_page_free(p);
+ p->flags &= ~PG_ZERO;
+ if (vm_page_free_prep(p, false))
+ TAILQ_INSERT_TAIL(&pgl, p, listq);
}
if (mtx != NULL)
mtx_unlock(mtx);
+ vm_page_free_phys_pglist(&pgl);
vm_object_pip_wakeup(object);
}
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