linux-kernel - [PATCH] btrfs: sysfs: Replace default

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Message-Id: <20190502173445.5308-1-kimbrownkd@gmail.com>
Date:   Thu,  2 May 2019 13:34:45 -0400
From:   Kimberly Brown <kimbrownkd@...il.com>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] btrfs: sysfs: Replace default_attrs in ktypes with groups

The kobj_type default_attrs field is being replaced by the
default_groups field. Replace the default_attrs fields in
btrfs_raid_ktype and space_info_ktype with default_groups.

Change "raid_attributes" to "raid_attrs", and use the ATTRIBUTE_GROUPS
macro to create raid_groups and space_info_groups.

Signed-off-by: Kimberly Brown <kimbrownkd@...il.com>
---

This patch depends on a patch in the driver-core tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?h=driver-core-next&id=aa30f47cf666111f6bbfd15f290a27e8a7b9d854

GregKH can take this patch through the driver-core tree, or this patch
can wait a release cycle and go through the subsystem's tree, whichever
the subsystem maintainer is more comfortable with.


 fs/btrfs/sysfs.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 5a5930e3d32b..ae0ad84a11aa 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -303,11 +303,12 @@ static ssize_t raid_bytes_show(struct kobject *kobj,
 	return snprintf(buf, PAGE_SIZE, "%llu\n", val);
 }
 
-static struct attribute *raid_attributes[] = {
+static struct attribute *raid_attrs[] = {
 	BTRFS_ATTR_PTR(raid, total_bytes),
 	BTRFS_ATTR_PTR(raid, used_bytes),
 	NULL
 };
+ATTRIBUTE_GROUPS(raid);
 
 static void release_raid_kobj(struct kobject *kobj)
 {
@@ -317,7 +318,7 @@ static void release_raid_kobj(struct kobject *kobj)
 struct kobj_type btrfs_raid_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.release = release_raid_kobj,
-	.default_attrs = raid_attributes,
+	.default_groups = raid_groups,
 };
 
 #define SPACE_INFO_ATTR(field)						\
@@ -364,6 +365,7 @@ static struct attribute *space_info_attrs[] = {
 	BTRFS_ATTR_PTR(space_info, total_bytes_pinned),
 	NULL,
 };
+ATTRIBUTE_GROUPS(space_info);
 
 static void space_info_release(struct kobject *kobj)
 {
@@ -375,7 +377,7 @@ static void space_info_release(struct kobject *kobj)
 struct kobj_type space_info_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.release = space_info_release,
-	.default_attrs = space_info_attrs,
+	.default_groups = space_info_groups,
 };
 
 static const struct attribute *allocation_attrs[] = {
-- 
2.17.1