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Allow swap-backed devices to run without Giant.

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alc 2004-03-14 00:24:30 +00:00
parent 9a2f75f567
commit 10b8b45873
1 changed files with 1 additions and 3 deletions
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4
sys/dev/md/md.c
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@ -542,7 +542,6 @@ mdstart_swap(struct md_s *sc, struct bio *bp)
lastp = (bp->bio_offset + bp->bio_length - 1) / PAGE_SIZE;
lastend = (bp->bio_offset + bp->bio_length - 1) % PAGE_SIZE + 1;
mtx_lock(&Giant);
kva = kmem_alloc_nofault(kernel_map, PAGE_SIZE);
VM_OBJECT_LOCK(sc->object);
@ -602,7 +601,6 @@ printf("wire_count %d busy %d flags %x hold_count %d act_count %d queue %d valid
vm_object_set_writeable_dirty(sc->object);
VM_OBJECT_UNLOCK(sc->object);
kmem_free(kernel_map, kva, sc->secsize);
mtx_unlock(&Giant);
return (0);
}
}
@ -618,13 +616,13 @@ md_kthread(void *arg)
curthread->td_base_pri = PRIBIO;
switch (sc->type) {
case MD_SWAP:
case MD_VNODE:
mtx_lock(&Giant);
hasgiant = 1;
break;
case MD_MALLOC:
case MD_PRELOAD:
case MD_SWAP:
default:
hasgiant = 0;
break;