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o Remove GIANT_REQUIRED from phys_pager_alloc(). If handle isn't NULL,

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acquire and release Giant.  If handle is NULL, Giant isn't needed.
 o Annotate phys_pager_alloc() and phys_pager_dealloc() as MPSAFE.
This commit is contained in:
Alan Cox 2002-06-22 07:54:42 +00:00
parent 990ab7add4
commit 2a1618cd59
1 changed files with 8 additions and 3 deletions
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11
sys/vm/phys_pager.c
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@ -56,14 +56,15 @@ phys_pager_init(void)
mtx_init(&phys_pager_mtx, "phys_pager list", NULL, MTX_DEF);
}
/*
* MPSAFE
*/
static vm_object_t
phys_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot,
vm_ooffset_t foff)
{
vm_object_t object;
GIANT_REQUIRED;
/*
* Offset should be page aligned.
*/
@ -73,6 +74,7 @@ phys_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot,
size = round_page(size);
if (handle != NULL) {
mtx_lock(&Giant);
/*
* Lock to prevent object creation race condition.
*/
@ -108,7 +110,7 @@ phys_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot,
if (phys_pager_alloc_lock == -1)
wakeup(&phys_pager_alloc_lock);
phys_pager_alloc_lock = 0;
mtx_unlock(&Giant);
} else {
object = vm_object_allocate(OBJT_PHYS,
OFF_TO_IDX(foff + size));
@ -117,6 +119,9 @@ phys_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot,
return (object);
}
/*
* MPSAFE
*/
static void
phys_pager_dealloc(vm_object_t object)
{