From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Fengguang Subject: [PATCH 09/14] readahead: increase interleaved readahead size Date: Tue, 07 Apr 2009 19:50:48 +0800 Message-ID: <20090407115234.770399130@intel.com> References: <20090407115039.780820496@intel.com> Return-path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id 188AC5F000B for ; Tue, 7 Apr 2009 08:00:54 -0400 (EDT) Content-Disposition: inline; filename=readahead-interleaved-size.patch Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: Benjamin Herrenschmidt , Wu Fengguang , David Rientjes , Hugh Dickins , Ingo Molnar , Lee Schermerhorn , Mike Waychison , Nick Piggin , Peter Zijlstra , Rohit Seth , Edwin , "H. Peter Anvin" , Ying Han , LKML , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org List-Id: linux-mm.kvack.org Make sure interleaved readahead size is larger than request size. This also makes readahead window grow up more quickly. Reported-by: Xu Chenfeng Signed-off-by: Wu Fengguang --- mm/readahead.c | 1 + 1 file changed, 1 insertion(+) --- mm.orig/mm/readahead.c +++ mm/mm/readahead.c @@ -428,6 +428,7 @@ ondemand_readahead(struct address_space ra->start = start; ra->size = start - offset; /* old async_size */ + ra->size += req_size; ra->size = get_next_ra_size(ra, max); ra->async_size = ra->size; goto readit; -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org