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Code Issues Releases Wiki Activity

aoe: register default groups with device_add_disk()

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Register default sysfs groups during device_add_disk() to avoid a
race condition with udev during startup.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ed L. Cachin <ed.cashin@acm.org>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hannes Reinecke 2018-09-28 08:17:21 +02:00 committed by Jens Axboe
parent 33b14f67a4
commit 95cf7809bf
3 changed files with 7 additions and 16 deletions
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1
drivers/block/aoe/aoe.h
View file

@ -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);

21
drivers/block/aoe/aoeblk.c
View file

@ -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,
@ -219,17 +224,6 @@ aoedisk_rm_debugfs(struct aoedev *d)
d->debugfs = NULL;
}
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)
{
@ -417,8 +411,7 @@ aoeblk_gdalloc(void *vp)
spin_unlock_irqrestore(&d->lock, flags);
add_disk(gd);
aoedisk_add_sysfs(d);
device_add_disk(NULL, gd, aoe_attr_groups);
aoedisk_add_debugfs(d);
spin_lock_irqsave(&d->lock, flags);

1
drivers/block/aoe/aoedev.c
View file

@ -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);