Commit 52488615 authored by Raz Ben-Jehuda(caro)'s avatar Raz Ben-Jehuda(caro) Committed by Linus Torvalds
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[PATCH] md: enable bypassing cache for reads 



Call the chunk_aligned_read where appropriate.

Signed-off-by: default avatarNeil Brown <neilb@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 46031f9a

drivers/md/raid5.c

+5 −0
Original line number Diff line number Diff line
@@ -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;