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Commit 026ec578 authored by Maxim Levitsky's avatar Maxim Levitsky Committed by David Woodhouse
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mtd: blktrans: allow FTL drivers to export sysfs attributes 



This patch adds an ability to export sysfs attributes below
the block disk device.

This can be used to pass the udev an information about the FTL
and could include the vendor, serial, version, etc...

Signed-off-by: default avatarMaxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 75c0b84d

drivers/mtd/mtd_blkdevs.c

+8 −0
Original line number Diff line number Diff line
@@ -379,6 +379,10 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) 
		set_disk_ro(gd, 1);



	add_disk(gd);



	if (new->disk_attributes)

		sysfs_create_group(&disk_to_dev(gd)->kobj,

					new->disk_attributes);

	return 0;

error4:

	module_put(tr->owner);
@@ -405,6 +409,10 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old) 
	/* Stop new requests to arrive */

	del_gendisk(old->disk);



	if (old->disk_attributes)

		sysfs_remove_group(&disk_to_dev(old->disk)->kobj,

						old->disk_attributes);



	/* Stop the thread */

	kthread_stop(old->thread);

include/linux/mtd/blktrans.h

+2 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/mutex.h>

#include <linux/kref.h>

#include <linux/sysfs.h>



struct hd_geometry;

struct mtd_info;
@@ -28,6 +29,7 @@ struct mtd_blktrans_dev { 
	int open;

	struct kref ref;

	struct gendisk *disk;

	struct attribute_group *disk_attributes;

	struct task_struct *thread;

	struct request_queue *rq;

	spinlock_t queue_lock;