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Date: Tue, 26 Jun 2007 12:41:54 -0700 (PDT) From: Christoph Lameter <clameter@....com> To: Andrew Morton <akpm@...ux-foundation.org> cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, Pekka Enberg <penberg@...helsinki.fi>, suresh.b.siddha@...el.com Subject: Re: [patch 15/26] Slab defrag: Support generic defragmentation for inode slab caches On Tue, 26 Jun 2007, Andrew Morton wrote: > This is inverted: __GFP_FS is set if we may perform fs operations. Sigh. Slab defragmentation: Only perform slab defrag if __GFP_FS is clear Avoids slab defragmentation be triggered from filesystem operations. Signed-off-by: Christoph Lameter <clameter@....com> --- mm/vmscan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) Index: linux-2.6.22-rc4-mm2/mm/vmscan.c =================================================================== --- linux-2.6.22-rc4-mm2.orig/mm/vmscan.c 2007-06-26 12:25:28.000000000 -0700 +++ linux-2.6.22-rc4-mm2/mm/vmscan.c 2007-06-26 12:40:44.000000000 -0700 @@ -233,8 +233,9 @@ unsigned long shrink_slab(unsigned long shrinker->nr += total_scan; } up_read(&shrinker_rwsem); - kmem_cache_defrag(sysctl_slab_defrag_ratio, - zone ? zone_to_nid(zone) : -1); + if (gfp_mask & __GFP_FS) + kmem_cache_defrag(sysctl_slab_defrag_ratio, + zone ? zone_to_nid(zone) : -1); return ret; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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