Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 13:41:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

block: add the events* attributes to disk_attrs

Browse Source 
Add the events attributes to the disk_attrs array, which ensures they are
added by the driver core when the device is created rather than adding
them after the device has been added, which is racy versus uevents and
requires more boilerplate code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210624073843.251178-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-24 09:38:43 +02:00 committed by Jens Axboe
parent d5870edfa3
commit 2bc8cda5ea
3 changed files with 10 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
block/blk.h
View File

@ -364,5 +364,8 @@ void disk_alloc_events(struct gendisk *disk);
void disk_add_events(struct gendisk *disk); void disk_add_events(struct gendisk *disk);
void disk_del_events(struct gendisk *disk); void disk_del_events(struct gendisk *disk);
void disk_release_events(struct gendisk *disk); void disk_release_events(struct gendisk *disk);
extern struct device_attribute dev_attr_events;
extern struct device_attribute dev_attr_events_async;
extern struct device_attribute dev_attr_events_poll_msecs;
#endif /* BLK_INTERNAL_H */ #endif /* BLK_INTERNAL_H */

23
block/disk-events.c
View File

@ -368,18 +368,10 @@ static ssize_t disk_events_poll_msecs_store(struct device *dev,
return count; return count;
} }
static const DEVICE_ATTR(events, 0444, disk_events_show, NULL); DEVICE_ATTR(events, 0444, disk_events_show, NULL);
static const DEVICE_ATTR(events_async, 0444, disk_events_async_show, NULL); DEVICE_ATTR(events_async, 0444, disk_events_async_show, NULL);
static const DEVICE_ATTR(events_poll_msecs, 0644, DEVICE_ATTR(events_poll_msecs, 0644, disk_events_poll_msecs_show,
disk_events_poll_msecs_show, disk_events_poll_msecs_store);
disk_events_poll_msecs_store);
static const struct attribute *disk_events_attrs[] = {
&dev_attr_events.attr,
&dev_attr_events_async.attr,
&dev_attr_events_poll_msecs.attr,
NULL,
};
/* /*
* The default polling interval can be specified by the kernel * The default polling interval can be specified by the kernel
@ -444,11 +436,6 @@ void disk_alloc_events(struct gendisk *disk)
void disk_add_events(struct gendisk *disk) void disk_add_events(struct gendisk *disk)
{ {
/* FIXME: error handling */
if (sysfs_create_files(&disk_to_dev(disk)->kobj, disk_events_attrs) < 0)
pr_warn("%s: failed to create sysfs files for events\n",
disk->disk_name);
if (!disk->ev) if (!disk->ev)
return; return;
@ -472,8 +459,6 @@ void disk_del_events(struct gendisk *disk)
list_del_init(&disk->ev->node); list_del_init(&disk->ev->node);
mutex_unlock(&disk_events_mutex); mutex_unlock(&disk_events_mutex);
} }
sysfs_remove_files(&disk_to_dev(disk)->kobj, disk_events_attrs);
} }
void disk_release_events(struct gendisk *disk) void disk_release_events(struct gendisk *disk)

3
block/genhd.c
View File

@ -1022,6 +1022,9 @@ static struct attribute *disk_attrs[] = {
&dev_attr_stat.attr, &dev_attr_stat.attr,
&dev_attr_inflight.attr, &dev_attr_inflight.attr,
&dev_attr_badblocks.attr, &dev_attr_badblocks.attr,
&dev_attr_events.attr,
&dev_attr_events_async.attr,
&dev_attr_events_poll_msecs.attr,
#ifdef CONFIG_FAIL_MAKE_REQUEST #ifdef CONFIG_FAIL_MAKE_REQUEST
&dev_attr_fail.attr, &dev_attr_fail.attr,
#endif #endif