From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: [PATCH 009 of 9] md: Enable bypassing cache for reads. Date: Wed, 8 Nov 2006 09:10:07 +1100 Message-ID: <1061107221007.12586@suse.de> References: <20061108085917.12064.patches@notabene> Return-path: Sender: linux-raid-owner@vger.kernel.org To: Andrew Morton Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, "Raz Ben-Jehuda(caro)" List-Id: linux-raid.ids From: "Raz Ben-Jehuda(caro)" Call the chunk_aligned_read where appropriate. Signed-off-by: Neil Brown ### Diffstat output ./drivers/md/raid5.c | 5 +++++ 1 file changed, 5 insertions(+) diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c --- .prev/drivers/md/raid5.c 2006-11-06 11:29:14.000000000 +1100 +++ ./drivers/md/raid5.c 2006-11-06 11:29:14.000000000 +1100 @@ -2798,6 +2798,11 @@ static int make_request(request_queue_t disk_stat_inc(mddev->gendisk, ios[rw]); disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bi)); + if ( bio_data_dir(bi) == READ && + mddev->reshape_position == MaxSector && + chunk_aligned_read(q,bi)) + return 0; + logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1); last_sector = bi->bi_sector + (bi->bi_size>>9); bi->bi_next = NULL;