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zfs: avoid memory allocation in arc_prune_async

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This commit is contained in:
Mateusz Guzik 2021-04-11 07:15:41 +02:00
parent feea35bed0
commit 97ed4babb5
1 changed files with 10 additions and 6 deletions
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16
sys/contrib/openzfs/module/os/freebsd/zfs/arc_os.c
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@ -158,10 +158,13 @@ arc_default_max(uint64_t min, uint64_t allmem)
static void
arc_prune_task(void *arg)
{
int64_t nr_scan = *(int64_t *)arg;
#ifdef __LP64__
int64_t nr_scan = (int64_t)arg;
#else
int64_t nr_scan = (int32_t)arg;
#endif
arc_reduce_target_size(ptob(nr_scan));
free(arg, M_TEMP);
#if __FreeBSD_version >= 1300139
sx_xlock(&arc_vnlru_lock);
vnlru_free_vfsops(nr_scan, &zfs_vfsops, arc_vnlru_marker);
@ -185,13 +188,14 @@ arc_prune_task(void *arg)
void
arc_prune_async(int64_t adjust)
{
int64_t *adjustptr;
if ((adjustptr = malloc(sizeof (int64_t), M_TEMP, M_NOWAIT)) == NULL)
return;
#ifndef __LP64__
if (adjust > __LONG_MAX)
adjust = __LONG_MAX;
#endif
*adjustptr = adjust;
adjustptr = (void *)adjust;
taskq_dispatch(arc_prune_taskq, arc_prune_task, adjustptr, TQ_SLEEP);
ARCSTAT_BUMP(arcstat_prune);
}