[PATCH 05/14] blktrans: allow FTL drivers to export sysfs attributes
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From: Maxim Levitsky on 13 Feb 2010 08:10 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: Maxim Levitsky <maximlevitsky(a)gmail.com> --- drivers/mtd/mtd_blkdevs.c | 9 +++++++++ include/linux/mtd/blktrans.h | 2 ++ 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 1bc9c76..6850091 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -359,6 +359,11 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) 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); @@ -387,6 +392,10 @@ 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); diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index d89b8fb..b481ccd 100644 --- a/include/linux/mtd/blktrans.h +++ b/include/linux/mtd/blktrans.h @@ -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; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |