linux-kernel - [PATCH] dm sysfs: use default_groups in kobj

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Date:   Thu,  6 Jan 2022 11:02:31 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com
Subject: [PATCH] dm sysfs: use default_groups in kobj_type

There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the dm sysfs code to use default_groups field which has
been the preferred way since aa30f47cf666 ("kobject: Add support for
default attribute groups to kobj_type") so that we can soon get rid of
the obsolete default_attrs field.

Cc: Alasdair Kergon <agk@...hat.com>
Cc: Mike Snitzer <snitzer@...hat.com>
Cc: dm-devel@...hat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/md/dm-sysfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/md/dm-sysfs.c b/drivers/md/dm-sysfs.c
index a05fcd50e1b9..e28c92478536 100644
--- a/drivers/md/dm-sysfs.c
+++ b/drivers/md/dm-sysfs.c
@@ -112,6 +112,7 @@ static struct attribute *dm_attrs[] = {
 	&dm_attr_rq_based_seq_io_merge_deadline.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(dm);
 
 static const struct sysfs_ops dm_sysfs_ops = {
 	.show	= dm_attr_show,
@@ -120,7 +121,7 @@ static const struct sysfs_ops dm_sysfs_ops = {
 
 static struct kobj_type dm_ktype = {
 	.sysfs_ops	= &dm_sysfs_ops,
-	.default_attrs	= dm_attrs,
+	.default_groups	= dm_groups,
 	.release	= dm_kobject_release,
 };
 
-- 
2.34.1