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Date: Thu, 13 Feb 2014 16:45:21 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>,
David Rientjes <rientjes@...gle.com>,
Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
Fengguang Wu <fengguang.wu@...el.com>,
David Cohen <david.a.cohen@...ux.intel.com>,
Al Viro <viro@...iv.linux.org.uk>,
Damien Ramonda <damien.ramonda@...el.com>,
Jan Kara <jack@...e.cz>, linux-mm <linux-mm@...ck.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH V5] mm readahead: Fix readahead fail for no local
memory and limit readahead pages
On Thu, 13 Feb 2014 16:37:53 -0800 Linus Torvalds <torvalds@...ux-foundation.org> wrote:
> unsigned long max_sane_readahead(unsigned long nr)
> {
> return min(nr, 128);
> }
I bet nobody will notice.
It should be 128*4096/PAGE_CACHE_SIZE so that variations in PAGE_SIZE
don't affect readahead behaviour.
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