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| author | attilio <attilio@FreeBSD.org> | 2013-02-20 10:38:34 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2013-02-20 10:38:34 +0000 |
| commit | 658534ed5a02db4fef5b0630008502474d6c26d6 (patch) | |
| tree | 567755b13eb4e24198cc8098e62ff4a975f8486c /sys/vm/vm_reserv.c | |
| parent | 5dce0c1384f698b3a27a82e72e3cbcf49b325404 (diff) | |
| download | FreeBSD-src-658534ed5a02db4fef5b0630008502474d6c26d6.zip FreeBSD-src-658534ed5a02db4fef5b0630008502474d6c26d6.tar.gz | |
Switch vm_object lock to be a rwlock.
* VM_OBJECT_LOCK and VM_OBJECT_UNLOCK are mapped to write operations
* VM_OBJECT_SLEEP() is introduced as a general purpose primitve to
get a sleep operation using a VM_OBJECT_LOCK() as protection
* The approach must bear with vm_pager.h namespace pollution so many
files require including directly rwlock.h
Diffstat (limited to 'sys/vm/vm_reserv.c')
| -rw-r--r-- | sys/vm/vm_reserv.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/vm/vm_reserv.c b/sys/vm/vm_reserv.c index e5ac1a5..869742e 100644 --- a/sys/vm/vm_reserv.c +++ b/sys/vm/vm_reserv.c @@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/queue.h> +#include <sys/rwlock.h> #include <sys/sbuf.h> #include <sys/sysctl.h> #include <sys/systm.h> @@ -311,7 +312,7 @@ vm_reserv_alloc_contig(vm_object_t object, vm_pindex_t pindex, u_long npages, int i, index, n; mtx_assert(&vm_page_queue_free_mtx, MA_OWNED); - VM_OBJECT_LOCK_ASSERT(object, MA_OWNED); + VM_OBJECT_LOCK_ASSERT(object, RA_WLOCKED); KASSERT(npages != 0, ("vm_reserv_alloc_contig: npages is 0")); /* @@ -495,7 +496,7 @@ vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex) vm_reserv_t rv; mtx_assert(&vm_page_queue_free_mtx, MA_OWNED); - VM_OBJECT_LOCK_ASSERT(object, MA_OWNED); + VM_OBJECT_LOCK_ASSERT(object, RA_WLOCKED); /* * Is a reservation fundamentally impossible? @@ -870,7 +871,7 @@ vm_reserv_rename(vm_page_t m, vm_object_t new_object, vm_object_t old_object, { vm_reserv_t rv; - VM_OBJECT_LOCK_ASSERT(new_object, MA_OWNED); + VM_OBJECT_LOCK_ASSERT(new_object, RA_WLOCKED); rv = vm_reserv_from_page(m); if (rv->object == old_object) { mtx_lock(&vm_page_queue_free_mtx); |
