md/raid5: Improve debug prints

Add a debug print for raid5_make_request() so that each request is
printed and add the logical sector number to the debug print in
__add_stripe_bio().

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index c81a1a6..651a84b 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3521,8 +3521,9 @@ static void __add_stripe_bio(struct stripe_head *sh, struct bio *bi,
                                sh->overwrite_disks++;
        }
 
-       pr_debug("added bi b#%llu to stripe s#%llu, disk %d.\n",
-                (*bip)->bi_iter.bi_sector, sh->sector, dd_idx);
+       pr_debug("added bi b#%llu to stripe s#%llu, disk %d, logical %llu\n",
+                (*bip)->bi_iter.bi_sector, sh->sector, dd_idx,
+                sh->dev[dd_idx].sector);
 
        if (conf->mddev->bitmap && firstwrite) {
                /* Cannot hold spinlock over bitmap_startwrite,
@@ -6094,6 +6095,9 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
                   DIV_ROUND_UP_SECTOR_T(ctx.last_sector - logical_sector,
                                         RAID5_STRIPE_SECTORS(conf)));
 
+       pr_debug("raid456: %s, logical %llu to %llu\n", __func__,
+                bi->bi_iter.bi_sector, ctx.last_sector);
+
        /* Bail out if conflicts with reshape and REQ_NOWAIT is set */
        if ((bi->bi_opf & REQ_NOWAIT) &&
            (conf->reshape_progress != MaxSector) &&