diff options
Diffstat (limited to 'sys/vm/vm_reserv.c')
| -rw-r--r-- | sys/vm/vm_reserv.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sys/vm/vm_reserv.c b/sys/vm/vm_reserv.c index fec0539..376f643 100644 --- a/sys/vm/vm_reserv.c +++ b/sys/vm/vm_reserv.c @@ -309,6 +309,35 @@ vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex) /* * Look for an existing reservation. */ +#ifdef VM_RADIX + mpred = vm_radix_lookup_le(&object->rtree, pindex); + if (mpred != NULL) { + KASSERT(mpred->pindex != pindex, + ("vm_reserv_alloc_page: pindex already allocated")); + rv = vm_reserv_from_page(mpred); + if (rv->object == object && vm_reserv_has_pindex(rv, pindex)) { + m = &rv->pages[VM_RESERV_INDEX(object, pindex)]; + if ((m->flags & (PG_CACHED | PG_FREE)) == 0) + return (NULL); + vm_reserv_populate(rv); + return (m); + } + } + msucc = vm_radix_lookup_ge(&object->rtree, pindex); + if (msucc != NULL) { + KASSERT(msucc->pindex != pindex, + ("vm_reserv_alloc_page: pindex already allocated")); + rv = vm_reserv_from_page(msucc); + if (rv->object == object && vm_reserv_has_pindex(rv, pindex)) { + m = &rv->pages[VM_RESERV_INDEX(object, pindex)]; + if ((m->flags & (PG_CACHED | PG_FREE)) == 0) + return (NULL); + vm_reserv_populate(rv); + return (m); + } + } + +#else msucc = NULL; mpred = object->root; while (mpred != NULL) { @@ -347,6 +376,7 @@ vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex) msucc = NULL; mpred = object->root = vm_page_splay(pindex, object->root); } +#endif /* * Determine the first index to the left that can be used. |
