Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932497AbWCMWNG (ORCPT ); Mon, 13 Mar 2006 17:13:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932495AbWCMWNG (ORCPT ); Mon, 13 Mar 2006 17:13:06 -0500 Received: from mx1.redhat.com ([66.187.233.31]:18886 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S932498AbWCMWNE (ORCPT ); Mon, 13 Mar 2006 17:13:04 -0500 Message-ID: <4415EED0.20208@ce.jp.nec.com> Date: Mon, 13 Mar 2006 17:14:40 -0500 From: "Jun'ichi Nomura" User-Agent: Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton , Alasdair Kergon , Greg KH , Neil Brown CC: Lars Marowsky-Bree , device-mapper development , linux-kernel@vger.kernel.org Subject: [PATCH 2/7] dm/md dependency tree in sysfs: holders/slaves subdirectory References: <4415EC4B.4010003@ce.jp.nec.com> In-Reply-To: <4415EC4B.4010003@ce.jp.nec.com> Content-Type: multipart/mixed; boundary="------------080909080901060903030707" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3734 Lines: 121 This is a multi-part message in MIME format. --------------080909080901060903030707 Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit This patch is part of dm/md dependency tree in sysfs. With this patch, "slaves" and "holders" directories are created in /sys/block/ and "holders" directory is created in /sys/block//. Thanks, -- Jun'ichi Nomura, NEC Solutions (America), Inc. --------------080909080901060903030707 Content-Type: text/x-patch; name="02-add_subdirs.patch" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="02-add_subdirs.patch" Creating "slaves" and "holders" directories in /sys/block/ and creating "holders" directory under /sys/block// Signed-off-by: Jun'ichi Nomura fs/partitions/check.c | 27 +++++++++++++++++++++++++++ include/linux/genhd.h | 3 +++ 2 files changed, 30 insertions(+) --- linux-2.6.16-rc6.orig/include/linux/genhd.h 2006-03-11 17:12:55.000000000 -0500 +++ linux-2.6.16-rc6/include/linux/genhd.h 2006-03-13 11:24:13.000000000 -0500 @@ -78,6 +78,7 @@ struct hd_struct { sector_t start_sect; sector_t nr_sects; struct kobject kobj; + struct kobject *holder_dir; unsigned ios[2], sectors[2]; /* READs and WRITEs */ int policy, partno; }; @@ -114,6 +115,8 @@ struct gendisk { int number; /* more of the same */ struct device *driverfs_dev; struct kobject kobj; + struct kobject *holder_dir; + struct kobject *slave_dir; struct timer_rand_state *random; int policy; --- linux-2.6.16-rc6.orig/fs/partitions/check.c 2006-03-11 17:12:55.000000000 -0500 +++ linux-2.6.16-rc6/fs/partitions/check.c 2006-03-13 11:24:03.000000000 -0500 @@ -297,6 +297,25 @@ struct kobj_type ktype_part = { .sysfs_ops = &part_sysfs_ops, }; +static inline void partition_sysfs_add_subdir(struct hd_struct *p) +{ + struct kobject *k; + + k = kobject_get(&p->kobj); + p->holder_dir = kobject_add_dir(k, "holders"); + kobject_put(k); +} + +static inline void disk_sysfs_add_subdirs(struct gendisk *disk) +{ + struct kobject *k; + + k = kobject_get(&disk->kobj); + disk->holder_dir = kobject_add_dir(k, "holders"); + disk->slave_dir = kobject_add_dir(k, "slaves"); + kobject_put(k); +} + void delete_partition(struct gendisk *disk, int part) { struct hd_struct *p = disk->part[part-1]; @@ -310,6 +329,8 @@ void delete_partition(struct gendisk *di p->ios[0] = p->ios[1] = 0; p->sectors[0] = p->sectors[1] = 0; devfs_remove("%s/part%d", disk->devfs_name, part); + if (p->holder_dir) + kobject_unregister(p->holder_dir); kobject_unregister(&p->kobj); } @@ -337,6 +358,7 @@ void add_partition(struct gendisk *disk, p->kobj.parent = &disk->kobj; p->kobj.ktype = &ktype_part; kobject_register(&p->kobj); + partition_sysfs_add_subdir(p); disk->part[part-1] = p; } @@ -383,6 +405,7 @@ void register_disk(struct gendisk *disk) if ((err = kobject_add(&disk->kobj))) return; disk_sysfs_symlinks(disk); + disk_sysfs_add_subdirs(disk); kobject_uevent(&disk->kobj, KOBJ_ADD); /* No minors to use for partitions */ @@ -483,6 +506,10 @@ void del_gendisk(struct gendisk *disk) devfs_remove_disk(disk); + if (disk->holder_dir) + kobject_unregister(disk->holder_dir); + if (disk->holder_dir) + kobject_unregister(disk->slave_dir); if (disk->driverfs_dev) { char *disk_name = make_block_name(disk); sysfs_remove_link(&disk->kobj, "device"); --------------080909080901060903030707-- - 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/