diff options
| author | dg <dg@FreeBSD.org> | 1995-03-27 02:41:00 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1995-03-27 02:41:00 +0000 |
| commit | eae6c57cbf72ac4613e2937e3268b88856c3065d (patch) | |
| tree | 4ce056043274c6b7ed3ed53bdc41cc11f9b2db8d /sys/vm/vm_fault.c | |
| parent | 7ea938b9c95de482afc457a3e20abe9db91e63f8 (diff) | |
| download | FreeBSD-src-eae6c57cbf72ac4613e2937e3268b88856c3065d.zip FreeBSD-src-eae6c57cbf72ac4613e2937e3268b88856c3065d.tar.gz | |
Explicitly set page dirty if this is a write fault - reduces calls to
pmap_is_modified() later.
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index 9beab2b..df5e4c4 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -66,7 +66,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_fault.c,v 1.19 1995/02/22 09:15:26 davidg Exp $ + * $Id: vm_fault.c,v 1.20 1995/03/01 23:29:55 davidg Exp $ */ /* @@ -806,8 +806,17 @@ RetryCopy: * won't find us (yet). */ - if (prot & VM_PROT_WRITE) + if (prot & VM_PROT_WRITE) { m->flags |= PG_WRITEABLE; + /* + * If the fault is a write, we know that this page is being + * written NOW. This will save on the pmap_is_modified() calls + * later. + */ + if (fault_type & VM_PROT_WRITE) { + m->dirty = VM_PAGE_BITS_ALL; + } + } m->flags |= PG_MAPPED; pmap_enter(map->pmap, vaddr, VM_PAGE_TO_PHYS(m), prot, wired); |
