From feaf1e321da97ab0aaa60edc121fb6aa2d03952d Mon Sep 17 00:00:00 2001 From: Richard Yao Date: Thu, 21 Mar 2013 13:21:11 -0400 Subject: [PATCH] Do not call cond_resched() in spl_slab_reclaim() Calling cond_resched() after each object is freed and then after each slab is freed can cause slabs of objects to live for excessive periods of time following reclaimation. This interferes with the kernel's own memory management when called from kswapd and can cause direct reclaim to occur in response to memory pressure that should have been resolved. Signed-off-by: Richard Yao --- module/spl/spl-kmem.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/module/spl/spl-kmem.c b/module/spl/spl-kmem.c index f9c1114..a0ca2d2 100644 --- a/module/spl/spl-kmem.c +++ b/module/spl/spl-kmem.c @@ -1112,14 +1112,11 @@ spl_slab_reclaim(spl_kmem_cache_t *skc, int count, int flag) if (skc->skc_flags & KMC_OFFSLAB) kv_free(skc, sko->sko_addr, size); - - cond_resched(); } list_for_each_entry_safe(sks, m, &sks_list, sks_list) { ASSERT(sks->sks_magic == SKS_MAGIC); kv_free(skc, sks, skc->skc_slab_size); - cond_resched(); } SEXIT; -- 2.40.0