diff options
| author | attilio <attilio@FreeBSD.org> | 2013-05-21 20:38:19 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2013-05-21 20:38:19 +0000 |
| commit | fdf82ef9cfb84888e76e303fe6c9ee30fbc21d1e (patch) | |
| tree | 24458ef5e2585280bf95280f83f977fde60faeaa /sys/vm/vm_object.h | |
| parent | 05bd8275f3829e7d1f55e8faabd64095eab3c291 (diff) | |
| download | FreeBSD-src-fdf82ef9cfb84888e76e303fe6c9ee30fbc21d1e.zip FreeBSD-src-fdf82ef9cfb84888e76e303fe6c9ee30fbc21d1e.tar.gz | |
o Relax locking assertions for vm_page_find_least()
o Relax locking assertions for pmap_enter_object() and add them also
to architectures that currently don't have any
o Introduce VM_OBJECT_LOCK_DOWNGRADE() which is basically a downgrade
operation on the per-object rwlock
o Use all the mechanisms above to make vm_map_pmap_enter() to work
mostl of the times only with readlocks.
Sponsored by: EMC / Isilon storage division
Reviewed by: alc
Diffstat (limited to 'sys/vm/vm_object.h')
| -rw-r--r-- | sys/vm/vm_object.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h index cf54663..05ab73d 100644 --- a/sys/vm/vm_object.h +++ b/sys/vm/vm_object.h @@ -223,6 +223,8 @@ extern struct vm_object kmem_object_store; rw_assert(&(object)->lock, RA_RLOCKED) #define VM_OBJECT_ASSERT_WLOCKED(object) \ rw_assert(&(object)->lock, RA_WLOCKED) +#define VM_OBJECT_LOCK_DOWNGRADE(object) \ + rw_downgrade(&(object)->lock) #define VM_OBJECT_RLOCK(object) \ rw_rlock(&(object)->lock) #define VM_OBJECT_RUNLOCK(object) \ |
