From df1b620a3e13b682f624c2cbf73e88d825d6d386 Mon Sep 17 00:00:00 2001
From: Logan Gunthorpe <logang@deltatee.com>
Date: Thu, 16 Jun 2022 13:19:44 -0600
Subject: [PATCH] md/raid5: Improve debug prints
Git-commit: df1b620a3e13b682f624c2cbf73e88d825d6d386
Patch-mainline: v6.0-rc1
References: jsc#PED-2766
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>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/raid5.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index c81a1a635ff7..651a84bf1a13 100644
--- 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) &&
--
2.35.3