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- Release the lock while allocating pages for the pool (in grow_kernel_pool).

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svn path=/trunk/; revision=5006
This commit is contained in:
Hartmut Birr 2003-07-06 07:36:56 +00:00
parent 9fa9badcf4
commit c6b8b78565
1 changed files with 24 additions and 6 deletions
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30
reactos/ntoskrnl/mm/npool.c
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@ -1,4 +1,4 @@
/* $Id: npool.c,v 1.67 2003/07/05 18:10:50 hbirr Exp $
/* $Id: npool.c,v 1.68 2003/07/06 07:36:56 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -1155,10 +1155,10 @@ add_to_free_list(BLOCK_HDR* blk)
if (blk->AddressList.Blink != &AddressListHead)
{
current = CONTAINING_RECORD(blk->AddressList.Blink, BLOCK_HDR, AddressList);
if (current->Magic == BLOCK_HDR_FREE_MAGIC)
if (current->Magic == BLOCK_HDR_FREE_MAGIC &&
(PVOID)current + current->Size + sizeof(BLOCK_HDR) == (PVOID)blk)
{
CHECKPOINT;
assert((PVOID)current + current->Size + sizeof(BLOCK_HDR) == (PVOID)blk);
remove_from_free_list(current);
RemoveEntryList(&blk->AddressList);
current->Size = current->Size + sizeof(BLOCK_HDR) + blk->Size;
@ -1171,10 +1171,10 @@ add_to_free_list(BLOCK_HDR* blk)
if (blk->AddressList.Flink != &AddressListHead)
{
current = CONTAINING_RECORD(blk->AddressList.Flink, BLOCK_HDR, AddressList);
if (current->Magic == BLOCK_HDR_FREE_MAGIC)
if (current->Magic == BLOCK_HDR_FREE_MAGIC &&
(PVOID)blk + blk->Size + sizeof(BLOCK_HDR) == (PVOID)current)
{
CHECKPOINT;
assert((PVOID)blk + blk->Size + sizeof(BLOCK_HDR) == (PVOID)current);
remove_from_free_list(current);
RemoveEntryList(&current->AddressList);
blk->Size = blk->Size + sizeof(BLOCK_HDR) + current->Size;
@ -1373,10 +1373,12 @@ static void* grow_kernel_pool(unsigned int size, ULONG Tag, PVOID Caller)
ULONG nr_pages = PAGE_ROUND_UP(size + sizeof(BLOCK_HDR)) / PAGE_SIZE;
ULONG start;
BLOCK_HDR* blk=NULL;
BLOCK_HDR* current;
ULONG i;
KIRQL oldIrql;
NTSTATUS Status;
PVOID block = NULL;
PLIST_ENTRY current_entry;
if (size >= PAGE_SIZE)
{
@ -1391,6 +1393,7 @@ static void* grow_kernel_pool(unsigned int size, ULONG Tag, PVOID Caller)
KeBugCheck(0);
}
MiCurrentNonPagedPoolLength += nr_pages * PAGE_SIZE;
KeReleaseSpinLock(&MmNpoolLock, oldIrql);
DPRINT("growing heap for block size %d, ",size);
DPRINT("start %x\n",start);
@ -1422,7 +1425,22 @@ static void* grow_kernel_pool(unsigned int size, ULONG Tag, PVOID Caller)
blk->Size = (nr_pages * PAGE_SIZE) - sizeof(BLOCK_HDR);
memset(block_to_address(blk), 0xcc, blk->Size);
InsertTailList(&AddressListHead, &blk->AddressList);
KeAcquireSpinLock(&MmNpoolLock, &oldIrql);
current_entry = AddressListHead.Blink;
while (current_entry != &AddressListHead)
{
current = CONTAINING_RECORD(current_entry, BLOCK_HDR, AddressList);
if ((PVOID)current + current->Size < (PVOID)blk)
{
InsertHeadList(current_entry, &blk->AddressList);
break;
}
current_entry = current_entry->Blink;
}
if (current_entry == &AddressListHead)
{
InsertHeadList(&AddressListHead, &blk->AddressList);
}
blk->Magic = BLOCK_HDR_FREE_MAGIC;
add_to_free_list(blk);
blk = lookup_block(size);