From 5424a0b867e65f1ecf34ffe88d091a4fcbb35bc1 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Mon, 22 Mar 2021 10:13:54 -0400
Subject: [PATCH] dm: don't report "detected capacity change" on device
creation
When a DM device is first created it doesn't yet have an established
capacity, therefore the use of set_capacity_and_notify() should be
conditional given the potential for needless pr_info "detected
capacity change" noise even if capacity is 0.
One could argue that the pr_info() in set_capacity_and_notify() is
misplaced, but that position is not held uniformly.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: f64d9b2eacb9 ("dm: use set_capacity_and_notify")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 50b693d776d603..3f3be9408afa74 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2036,7 +2036,10 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t,
if (size != dm_get_size(md))
memset(&md->geometry, 0, sizeof(md->geometry));
- set_capacity_and_notify(md->disk, size);
+ if (!get_capacity(md->disk))
+ set_capacity(md->disk, size);
+ else
+ set_capacity_and_notify(md->disk, size);
dm_table_event_callback(t, event_callback, md);
--
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