diff options
Diffstat (limited to 'sys-kernel/spl/files/spl-0.6.0_rc14-no-cond_resched.patch')
| -rw-r--r-- | sys-kernel/spl/files/spl-0.6.0_rc14-no-cond_resched.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sys-kernel/spl/files/spl-0.6.0_rc14-no-cond_resched.patch b/sys-kernel/spl/files/spl-0.6.0_rc14-no-cond_resched.patch new file mode 100644 index 000000000000..9f1d692d0371 --- /dev/null +++ b/sys-kernel/spl/files/spl-0.6.0_rc14-no-cond_resched.patch @@ -0,0 +1,38 @@ +From 58a382c73ad3393d7591421950624e75d3c4aea1 Mon Sep 17 00:00:00 2001 +From: Richard Yao <ryao@cs.stonybrook.edu> +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 <ryao@cs.stonybrook.edu> +--- + 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 @@ char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap) + + 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; +-- +1.8.1.5 + |