From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: scsi command slab allocation under memory pressure Date: Mon, 3 Feb 2003 14:59:30 -0800 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030203145930.34e079dc.akpm@digeo.com> References: <20030129104731.A2811@beaverton.ibm.com> <3E382E2C.4030201@splentec.com> <20030129121117.A3389@beaverton.ibm.com> <20030130225738.1874c2e0.akpm@digeo.com> <1044020591.2002.16.camel@mulgrave> <20030131124412.086f2d1c.akpm@digeo.com> <20030203225550.GJ29516@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from digeo-nav01.digeo.com (digeo-nav01.digeo.com [192.168.1.233]) by packet.digeo.com (8.9.3+Sun/8.9.3) with SMTP id PAA21140 for ; Mon, 3 Feb 2003 15:04:47 -0800 (PST) In-Reply-To: <20030203225550.GJ29516@redhat.com> List-Id: linux-scsi@vger.kernel.org To: Doug Ledford Cc: James.Bottomley@steeleye.com, patmans@us.ibm.com, luben@splentec.com, linux-scsi@vger.kernel.org Doug Ledford wrote: > > Of course, that's just my 5 minute analysis, someone feel free to prove me > wrong. I'd agree with that. Plus there's the PF_MEMALLOC thing which gives swapper-outers an extra megabyte or two. If _any_ of these allocations are happening in process context then they will benefit from this. If all the allocations are happening at interrupt/softirq time then some changes might be needed. But I haven't been able to break it, using aix7xxx, with quite harsh testing.