Commit a25c32be authored by Gabriel de Perthuis's avatar Gabriel de Perthuis Committed by Kent Overstreet
Browse files

bcache: Send a uevent with a cached device's UUID 



Signed-off-by: default avatarGabriel de Perthuis <g2p.code@gmail.com>
parent bd206b51

drivers/md/bcache/super.c

+9 −3
Original line number Diff line number Diff line
@@ -825,6 +825,11 @@ static void calc_cached_dev_sectors(struct cache_set *c) 
void bch_cached_dev_run(struct cached_dev *dc)

{

	struct bcache_device *d = &dc->disk;

	char *env[] = {

		"DRIVER=bcache",

		kasprintf(GFP_KERNEL, "CACHED_UUID=%pU", dc->sb.uuid),

		NULL

	};



	if (atomic_xchg(&dc->running, 1))

		return;
@@ -841,10 +846,11 @@ void bch_cached_dev_run(struct cached_dev *dc) 


	add_disk(d->disk);

	bd_link_disk_holder(dc->bdev, dc->disk.disk);

#if 0

	char *env[] = { "SYMLINK=label" , NULL };

	/* won't show up in the uevent file, use udevadm monitor -e instead

	 * only class / kset properties are persistent */

	kobject_uevent_env(&disk_to_dev(d->disk)->kobj, KOBJ_CHANGE, env);

#endif

	kfree(env[1]);



	if (sysfs_create_link(&d->kobj, &disk_to_dev(d->disk)->kobj, "dev") ||

	    sysfs_create_link(&disk_to_dev(d->disk)->kobj, &d->kobj, "bcache"))

		pr_debug("error creating sysfs link");