[PATCH 4/5] aoe: use device_add_disk_with_groups()

Hannes Reinecke
2018-07-25T07:38:54Z

Use device_add_disk_with_groups() to avoid a race condition with
udev during startup.

Signed-off-by: Hannes Reinecke <hare@suse.com>
---
drivers/block/aoe/aoe.h | 1 -
drivers/block/aoe/aoeblk.c | 21 +++++++--------------
drivers/block/aoe/aoedev.c | 1 -
3 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index c0ebda1283cc..015c68017a1c 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -201,7 +201,6 @@ int aoeblk_init(void);
void aoeblk_exit(void);
void aoeblk_gdalloc(void *);
void aoedisk_rm_debugfs(struct aoedev *d);
-void aoedisk_rm_sysfs(struct aoedev *d);

int aoechr_init(void);
void aoechr_exit(void);
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 429ebb84b592..b9d30150ce20 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -177,10 +177,15 @@ static struct attribute *aoe_attrs[] = {
NULL,
};

-static const struct attribute_group attr_group = {
+static const struct attribute_group aoe_attr_group = {
.attrs = aoe_attrs,
};

+static const struct attribute_group *aoe_attr_groups[] = {
+ &aoe_attr_group,
+ NULL,
+};
+
static const struct file_operations aoe_debugfs_fops = {
.open = aoe_debugfs_open,
.read = seq_read,
@@ -220,17 +225,6 @@ aoedisk_rm_debugfs(struct aoedev *d)
}

static int
-aoedisk_add_sysfs(struct aoedev *d)
-{
- return sysfs_create_group(&disk_to_dev(d->gd)->kobj, &attr_group);
-}
-void
-aoedisk_rm_sysfs(struct aoedev *d)
-{
- sysfs_remove_group(&disk_to_dev(d->gd)->kobj, &attr_group);
-}
-
-static int
aoeblk_open(struct block_device *bdev, fmode_t mode)
{
struct aoedev *d = bdev->bd_disk->private_data;
@@ -417,8 +411,7 @@ aoeblk_gdalloc(void *vp)

spin_unlock_irqrestore(&d->lock, flags);

- add_disk(gd);
- aoedisk_add_sysfs(d);
+ device_add_disk_with_groups(NULL, gd, aoe_attr_groups);
aoedisk_add_debugfs(d);

spin_lock_irqsave(&d->lock, flags);
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 697f735b07a4..d92fa1fe3580 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -275,7 +275,6 @@ freedev(struct aoedev *d)
del_timer_sync(&d->timer);
if (d->gd) {
aoedisk_rm_debugfs(d);
- aoedisk_rm_sysfs(d);
del_gendisk(d->gd);
put_disk(d->gd);
blk_cleanup_queue(d->blkq);
--
2.12.3