From 802ba064c49f655d20fed563f2a4924c8256ea10 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 13 Dec 2006 00:34:13 -0800 Subject: [PATCH] md: Don't assume that READ==0 and WRITE==1 - use the names explicitly Thanks Jens for alerting me to this. Cc: Jens Axboe Cc: Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/raid5.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 377f8bc9b78b..be008f034ada 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1827,16 +1827,16 @@ static void handle_stripe5(struct stripe_head *sh) struct bio *bi; mdk_rdev_t *rdev; if (test_and_clear_bit(R5_Wantwrite, &sh->dev[i].flags)) - rw = 1; + rw = WRITE; else if (test_and_clear_bit(R5_Wantread, &sh->dev[i].flags)) - rw = 0; + rw = READ; else continue; bi = &sh->dev[i].req; bi->bi_rw = rw; - if (rw) + if (rw == WRITE) bi->bi_end_io = raid5_end_write_request; else bi->bi_end_io = raid5_end_read_request; @@ -1872,7 +1872,7 @@ static void handle_stripe5(struct stripe_head *sh) atomic_add(STRIPE_SECTORS, &rdev->corrected_errors); generic_make_request(bi); } else { - if (rw == 1) + if (rw == WRITE) set_bit(STRIPE_DEGRADED, &sh->state); PRINTK("skip op %ld on disc %d for sector %llu\n", bi->bi_rw, i, (unsigned long long)sh->sector); @@ -2370,16 +2370,16 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page) struct bio *bi; mdk_rdev_t *rdev; if (test_and_clear_bit(R5_Wantwrite, &sh->dev[i].flags)) - rw = 1; + rw = WRITE; else if (test_and_clear_bit(R5_Wantread, &sh->dev[i].flags)) - rw = 0; + rw = READ; else continue; bi = &sh->dev[i].req; bi->bi_rw = rw; - if (rw) + if (rw == WRITE) bi->bi_end_io = raid5_end_write_request; else bi->bi_end_io = raid5_end_read_request; @@ -2415,7 +2415,7 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page) atomic_add(STRIPE_SECTORS, &rdev->corrected_errors); generic_make_request(bi); } else { - if (rw == 1) + if (rw == WRITE) set_bit(STRIPE_DEGRADED, &sh->state); PRINTK("skip op %ld on disc %d for sector %llu\n", bi->bi_rw, i, (unsigned long long)sh->sector); @@ -2567,7 +2567,7 @@ static int raid5_mergeable_bvec(request_queue_t *q, struct bio *bio, struct bio_ unsigned int chunk_sectors = mddev->chunk_size >> 9; unsigned int bio_sectors = bio->bi_size >> 9; - if (bio_data_dir(bio)) + if (bio_data_dir(bio) == WRITE) return biovec->bv_len; /* always allow writes to be mergeable */ max = (chunk_sectors - ((sector & (chunk_sectors - 1)) + bio_sectors)) << 9; @@ -2751,7 +2751,7 @@ 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 && + if (rw == READ && mddev->reshape_position == MaxSector && chunk_aligned_read(q,bi)) return 0; -- cgit v1.2.3