diff options
| author | kib <kib@FreeBSD.org> | 2013-07-11 05:47:26 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-07-11 05:47:26 +0000 |
| commit | da0e8446db5fe341cf068d68a7c012392cb2b064 (patch) | |
| tree | 9d8f98842785918ec9d4f13e8755f946b6eddccd /sys/vm/vm_object.h | |
| parent | c2cfac4ffcfbb4f2ff275d0ccb9622a92fb70d88 (diff) | |
| download | FreeBSD-src-da0e8446db5fe341cf068d68a7c012392cb2b064.zip FreeBSD-src-da0e8446db5fe341cf068d68a7c012392cb2b064.tar.gz | |
Never remove user-wired pages from an object when doing
msync(MS_INVALIDATE). The vm_fault_copy_entry() requires that object
range which corresponds to the user-wired vm_map_entry, is always
fully populated.
Add OBJPR_NOTWIRED flag for vm_object_page_remove() to request the
preserving behaviour, use it when calling vm_object_page_remove() from
vm_object_sync().
Reported and tested by: pho
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Diffstat (limited to 'sys/vm/vm_object.h')
| -rw-r--r-- | sys/vm/vm_object.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h index 05ab73d..e083b72 100644 --- a/sys/vm/vm_object.h +++ b/sys/vm/vm_object.h @@ -205,6 +205,7 @@ struct vm_object { */ #define OBJPR_CLEANONLY 0x1 /* Don't remove dirty pages. */ #define OBJPR_NOTMAPPED 0x2 /* Don't unmap pages. */ +#define OBJPR_NOTWIRED 0x4 /* Don't remove wired pages. */ TAILQ_HEAD(object_q, vm_object); |
