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Teach kmem_malloc about M_ZERO.

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This commit is contained in:
Jeff Roberson 2002-06-19 20:47:18 +00:00
parent 4507bd42c6
commit 95f24639b7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=98450
1 changed files with 10 additions and 4 deletions
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14
sys/vm/vm_kern.c
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@ -347,6 +347,7 @@ kmem_malloc(map, size, flags)
VM_PROT_ALL, VM_PROT_ALL, 0);
for (i = 0; i < size; i += PAGE_SIZE) {
int pflags;
/*
* Note: if M_NOWAIT specified alone, allocate from
* interrupt-safe queues only (just the free list). If
@ -356,10 +357,15 @@ kmem_malloc(map, size, flags)
* are not allowed to mess with the cache queue.
*/
retry:
m = vm_page_alloc(kmem_object, OFF_TO_IDX(offset + i),
((flags & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT) ?
VM_ALLOC_INTERRUPT :
VM_ALLOC_SYSTEM);
if ((flags & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
pflags = VM_ALLOC_INTERRUPT;
else
pflags = VM_ALLOC_SYSTEM;
if (flags & M_ZERO)
pflags |= VM_ALLOC_ZERO;
m = vm_page_alloc(kmem_object, OFF_TO_IDX(offset + i), pflags);
/*
* Ran out of space, free everything up and return. Don't need