Date: Wed, 28 Jun 2017 05:20:28 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r320436 - stable/11/sys/vm Message-ID: <201706280520.v5S5KSFJ018232@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: kib Date: Wed Jun 28 05:20:28 2017 New Revision: 320436 URL: https://svnweb.freebsd.org/changeset/base/320436 Log: MFC r320202: Call pmap_copy() only for map entries which have the backing object instantiated. Approved by: re (delphij) Modified: stable/11/sys/vm/vm_map.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/vm/vm_map.c ============================================================================== --- stable/11/sys/vm/vm_map.c Wed Jun 28 04:53:06 2017 (r320435) +++ stable/11/sys/vm/vm_map.c Wed Jun 28 05:20:28 2017 (r320436) @@ -3239,6 +3239,10 @@ vm_map_copy_entry( fake_entry->next = curthread->td_map_def_user; curthread->td_map_def_user = fake_entry; } + + pmap_copy(dst_map->pmap, src_map->pmap, + dst_entry->start, dst_entry->end - dst_entry->start, + src_entry->start); } else { dst_entry->object.vm_object = NULL; dst_entry->offset = 0; @@ -3248,9 +3252,6 @@ vm_map_copy_entry( *fork_charge += size; } } - - pmap_copy(dst_map->pmap, src_map->pmap, dst_entry->start, - dst_entry->end - dst_entry->start, src_entry->start); } else { /* * We don't want to make writeable wired pages copy-on-write.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201706280520.v5S5KSFJ018232>