Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933406Ab0BDXdv (ORCPT ); Thu, 4 Feb 2010 18:33:51 -0500 Received: from mail-fx0-f220.google.com ([209.85.220.220]:47667 "EHLO mail-fx0-f220.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933165Ab0BDXb2 (ORCPT ); Thu, 4 Feb 2010 18:31:28 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=JCQuBQbuZj38Pgo6Vg6m6WlCA2dQryLXFyeMZjSQPy/xka37eBduNI/ezC4/aAaZ5H ZiFgq6RhYEX6KCGR2u270UnNPDnpSgaTfUxxyLLf7q2iy7Graj/QV+EjO2VIQJXDQNov yz29uxdvD/frCJlhLEWZS1KrDL39nu6CUv/dQ= From: Maxim Levitsky To: David Woodhouse Cc: Artem Bityutskiy , linux-mtd , linux-kernel , Alex Dubov , joern , Thomas Gleixner , Maxim Levitsky Subject: [PATCH 07/17] blktrans: allow FTL drivers to export sysfs attributes Date: Fri, 5 Feb 2010 01:30:47 +0200 Message-Id: <1265326257-4446-8-git-send-email-maximlevitsky@gmail.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1265326257-4446-1-git-send-email-maximlevitsky@gmail.com> References: <1265326257-4446-1-git-send-email-maximlevitsky@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2223 Lines: 75 This patch add ability to export sysfs attributes below block disk device. This can be used to pass UDEV information about the FTL and could include vendor, serial, version, etc... Signed-off-by: Maxim Levitsky --- drivers/mtd/mtd_blkdevs.c | 11 ++++++++++- include/linux/mtd/blktrans.h | 2 ++ 2 files changed, 12 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 9992b2d..ac9d3f5 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -316,7 +316,6 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) set_capacity(gd, (new->size * tr->blksize) >> 9); - /* Create the request queue */ spin_lock_init(&new->queue_lock); new->rq = blk_init_queue(mtd_blktrans_request, &new->queue_lock); @@ -349,6 +348,11 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) new->open = 0; add_disk(gd); + if (new->disk_attributes) + sysfs_create_group(&disk_to_dev(gd)->kobj, + new->disk_attributes); + + return 0; error4: blk_cleanup_queue(new->rq); @@ -375,6 +379,11 @@ 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); + /* flush current requests */ spin_lock_irqsave(&old->queue_lock, flags); old->deleted = 1; diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index e276aca..faf1e54 100644 --- a/include/linux/mtd/blktrans.h +++ b/include/linux/mtd/blktrans.h @@ -9,6 +9,7 @@ #define __MTD_TRANS_H__ #include +#include struct hd_geometry; struct mtd_info; @@ -27,6 +28,7 @@ struct mtd_blktrans_dev { int deleted; int open; 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/