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[PATCH] md: enable bypassing cache for reads 

Call the chunk_aligned_read where appropriate.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Raz Ben-Jehuda(caro) 2006-12-10 02:20:48 -08:00 committed by Linus Torvalds
parent 46031f9a38
commit 5248861511
1 changed files with 5 additions and 0 deletions
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5
drivers/md/raid5.c
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@ -2808,6 +2808,11 @@ static int make_request(request_queue_t *q, struct bio * bi)
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;