linux-kernel - [PATCH v3 5/5] dm-writecache: output seq

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Message-Id: <20190131022955.9920-6-yehs2007@zoho.com>
Date:   Thu, 31 Jan 2019 10:29:55 +0800
From:   Huaisheng Ye <yehs2007@...o.com>
To:     mpatocka@...hat.com, snitzer@...hat.com, agk@...hat.com
Cc:     dan.j.williams@...el.com, hch@....de, jack@...e.cz, corbet@....net,
        dm-devel@...hat.com, linux-kernel@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-doc@...r.kernel.org,
        Huaisheng Ye <yehs1@...ovo.com>
Subject: [PATCH v3 5/5] dm-writecache: output seq_count within status

From: Huaisheng Ye <yehs1@...ovo.com>

seq_count is important for flush operations, output it within status
for debugging and analyzing code behavior.

Signed-off-by: Huaisheng Ye <yehs1@...ovo.com>
---
 drivers/md/dm-writecache.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 2c1e825..3396710 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -2231,9 +2231,9 @@ static void writecache_status(struct dm_target *ti, status_type_t type,
 
 	switch (type) {
 	case STATUSTYPE_INFO:
-		DMEMIT("%ld %llu %llu %llu", writecache_has_error(wc),
+		DMEMIT("%ld %llu %llu %llu %llu", writecache_has_error(wc),
 		       (unsigned long long)wc->n_blocks, (unsigned long long)wc->freelist_size,
-		       (unsigned long long)wc->writeback_size);
+		       (unsigned long long)wc->writeback_size, wc->seq_count);
 		break;
 	case STATUSTYPE_TABLE:
 		DMEMIT("%c %s %s %u ", WC_MODE_PMEM(wc) ? 'p' : 's',
-- 
1.8.3.1