Date: Fri, 15 Sep 2017 16:07:09 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r323616 - head/sys/vm Message-ID: <201709151607.v8FG79E1045731@repo.freebsd.org>
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Author: kib Date: Fri Sep 15 16:07:09 2017 New Revision: 323616 URL: https://svnweb.freebsd.org/changeset/base/323616 Log: Batch freeing of the pages in vm_object_page_remove() under the same free queue mutex lock owning session, same as it was done for the object termination in r323561. Reported and tested by: mjg Reviewed by: alc, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Modified: head/sys/vm/vm_object.c Modified: head/sys/vm/vm_object.c ============================================================================== --- head/sys/vm/vm_object.c Fri Sep 15 15:57:15 2017 (r323615) +++ head/sys/vm/vm_object.c Fri Sep 15 16:07:09 2017 (r323616) @@ -1953,6 +1953,7 @@ 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 || @@ -1961,6 +1962,7 @@ 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; @@ -2012,10 +2014,13 @@ 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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