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None of the "alloc" functions used by UMA assume that Giant is held any

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longer.  (If they still need it, e.g., contigmalloc(), they acquire it
themselves.)  Therefore, we need not acquire Giant in slab_zalloc().
This commit is contained in:
Alan Cox 2003-07-28 02:29:07 +00:00
parent 78e0aea5b7
commit 234c7726c8
1 changed files with 2 additions and 9 deletions
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11
sys/vm/uma_core.c
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@ -706,15 +706,8 @@ slab_zalloc(uma_zone_t zone, int wait)
wait &= ~M_ZERO;
if (booted || (zone->uz_flags & UMA_ZFLAG_PRIVALLOC)) {
if ((wait & M_NOWAIT) == 0) {
mtx_lock(&Giant);
mem = zone->uz_allocf(zone,
zone->uz_ppera * UMA_SLAB_SIZE, &flags, wait);
mtx_unlock(&Giant);
} else {
mem = zone->uz_allocf(zone,
zone->uz_ppera * UMA_SLAB_SIZE, &flags, wait);
}
mem = zone->uz_allocf(zone, zone->uz_ppera * UMA_SLAB_SIZE,
&flags, wait);
if (mem == NULL) {
ZONE_LOCK(zone);
return (NULL);