From 4c46501d1659475dc6c89554af6ce7fe6ecf615c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 25 Aug 2008 19:56:11 +0900 Subject: [PATCH] block: move holder_dir from disk to part0 Move disk->holder_dir to part0->holder_dir. Kill now mostly superflous bdev_get_holder(). While at it, kill superflous kobject_get/put() around holder_dir, slave_dir and cmd_filter creation and collapse disk_sysfs_add_subdirs() into register_disk(). These serve no purpose but obfuscating the code. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- block/cmd-filter.c | 9 ++------- fs/block_dev.c | 10 +--------- fs/partitions/check.c | 15 +++------------ include/linux/genhd.h | 1 - 4 files changed, 6 insertions(+), 29 deletions(-) diff --git a/block/cmd-filter.c b/block/cmd-filter.c index 79c14996ac1..e669aed4c6b 100644 --- a/block/cmd-filter.c +++ b/block/cmd-filter.c @@ -211,14 +211,10 @@ int blk_register_filter(struct gendisk *disk) { int ret; struct blk_cmd_filter *filter = &disk->queue->cmd_filter; - struct kobject *parent = kobject_get(disk->holder_dir->parent); - if (!parent) - return -ENODEV; - - ret = kobject_init_and_add(&filter->kobj, &rcf_ktype, parent, + ret = kobject_init_and_add(&filter->kobj, &rcf_ktype, + &disk_to_dev(disk)->kobj, "%s", "cmd_filter"); - if (ret < 0) return ret; @@ -231,7 +227,6 @@ void blk_unregister_filter(struct gendisk *disk) struct blk_cmd_filter *filter = &disk->queue->cmd_filter; kobject_put(&filter->kobj); - kobject_put(disk->holder_dir->parent); } EXPORT_SYMBOL(blk_unregister_filter); #endif diff --git a/fs/block_dev.c b/fs/block_dev.c index c982a910797..57d57264285 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -548,14 +548,6 @@ static struct kobject *bdev_get_kobj(struct block_device *bdev) return kobject_get(&disk_to_dev(bdev->bd_disk)->kobj); } -static struct kobject *bdev_get_holder(struct block_device *bdev) -{ - if (bdev->bd_contains != bdev) - return kobject_get(bdev->bd_part->holder_dir); - else - return kobject_get(bdev->bd_disk->holder_dir); -} - static int add_symlink(struct kobject *from, struct kobject *to) { if (!from || !to) @@ -608,7 +600,7 @@ static int bd_holder_grab_dirs(struct block_device *bdev, if (!bo->sdev) goto fail_put_hdev; - bo->hdir = bdev_get_holder(bdev); + bo->hdir = kobject_get(bdev->bd_part->holder_dir); if (!bo->hdir) goto fail_put_sdev; diff --git a/fs/partitions/check.c b/fs/partitions/check.c index ace6d03602c..f0f604950ff 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -305,16 +305,6 @@ struct device_type part_type = { .release = part_release, }; -static inline void disk_sysfs_add_subdirs(struct gendisk *disk) -{ - struct kobject *k; - - k = kobject_get(&disk_to_dev(disk)->kobj); - disk->holder_dir = kobject_create_and_add("holders", k); - disk->slave_dir = kobject_create_and_add("slaves", k); - kobject_put(k); -} - static void delete_partition_rcu_cb(struct rcu_head *head) { struct hd_struct *part = container_of(head, struct hd_struct, rcu_head); @@ -464,7 +454,8 @@ void register_disk(struct gendisk *disk) return; } #endif - disk_sysfs_add_subdirs(disk); + disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); + disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); /* No minors to use for partitions */ if (!disk_partitionable(disk)) @@ -592,7 +583,7 @@ void del_gendisk(struct gendisk *disk) disk_stat_set_all(disk, 0); disk->stamp = 0; - kobject_put(disk->holder_dir); + kobject_put(disk->part0.holder_dir); kobject_put(disk->slave_dir); disk->driverfs_dev = NULL; #ifndef CONFIG_SYSFS_DEPRECATED diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 4411bdd671d..2c0e1b597ab 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -141,7 +141,6 @@ struct gendisk { int flags; struct device *driverfs_dev; // FIXME: remove - struct kobject *holder_dir; struct kobject *slave_dir; struct timer_rand_state *random; -- 2.41.1