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Subject[PATCH 006 of 6] md: Enable bypassing cache for reads.

Call the chunk_aligned_read where appropriate.

cc: "Raz Ben-Jehuda(caro)" <raziebe@gmail.com>
Signed-off-by: Neil Brown <neilb@suse.de>

### 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 2006-10-31 16:42:30.000000000 +1100
+++ ./drivers/md/raid5.c 2006-10-31 16:47:53.000000000 +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;
-
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