From 033b96fd30db52a710d97b06f87d16fc59fee0f1 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Fri, 11 Nov 2005 06:09:55 +0100 Subject: [PATCH] remove mount/umount uevents from superblock handling The names of these events have been confusing from the beginning on, as they have been more like claim/release events. We needed these events for noticing HAL if storage devices have been mounted. Thanks to Al, we have the proper solution now and can poll() /proc/mounts instead to get notfied about mount tree changes. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- fs/super.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) (limited to 'fs') diff --git a/fs/super.c b/fs/super.c index 6689dde..5a347a4 100644 --- a/fs/super.c +++ b/fs/super.c @@ -665,16 +665,6 @@ static int test_bdev_super(struct super_block *s, void *data) return (void *)s->s_bdev == data; } -static void bdev_uevent(struct block_device *bdev, enum kobject_action action) -{ - if (bdev->bd_disk) { - if (bdev->bd_part) - kobject_uevent(&bdev->bd_part->kobj, action, NULL); - else - kobject_uevent(&bdev->bd_disk->kobj, action, NULL); - } -} - struct super_block *get_sb_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)) @@ -717,10 +707,8 @@ struct super_block *get_sb_bdev(struct file_system_type *fs_type, up_write(&s->s_umount); deactivate_super(s); s = ERR_PTR(error); - } else { + } else s->s_flags |= MS_ACTIVE; - bdev_uevent(bdev, KOBJ_MOUNT); - } } return s; @@ -736,7 +724,6 @@ void kill_block_super(struct super_block *sb) { struct block_device *bdev = sb->s_bdev; - bdev_uevent(bdev, KOBJ_UMOUNT); generic_shutdown_super(sb); sync_blockdev(bdev); close_bdev_excl(bdev); -- cgit v1.1 From 312c004d36ce6c739512bac83b452f4c20ab1f62 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Wed, 16 Nov 2005 09:00:00 +0100 Subject: [PATCH] driver core: replace "hotplug" by "uevent" Leave the overloaded "hotplug" word to susbsystems which are handling real devices. The driver core does not "plug" anything, it just exports the state to userspace and generates events. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- fs/partitions/check.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs') diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 8dc1822..7187a57 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -226,7 +226,7 @@ static struct sysfs_ops part_sysfs_ops = { static ssize_t part_uevent_store(struct hd_struct * p, const char *page, size_t count) { - kobject_hotplug(&p->kobj, KOBJ_ADD); + kobject_uevent(&p->kobj, KOBJ_ADD); return count; } static ssize_t part_dev_read(struct hd_struct * p, char *page) @@ -360,7 +360,7 @@ void register_disk(struct gendisk *disk) if ((err = kobject_add(&disk->kobj))) return; disk_sysfs_symlinks(disk); - kobject_hotplug(&disk->kobj, KOBJ_ADD); + kobject_uevent(&disk->kobj, KOBJ_ADD); /* No minors to use for partitions */ if (disk->minors == 1) { @@ -465,6 +465,6 @@ void del_gendisk(struct gendisk *disk) sysfs_remove_link(&disk->driverfs_dev->kobj, "block"); put_device(disk->driverfs_dev); } - kobject_hotplug(&disk->kobj, KOBJ_REMOVE); + kobject_uevent(&disk->kobj, KOBJ_REMOVE); kobject_del(&disk->kobj); } -- cgit v1.1 From 8218ef80932aa7e5e3d20c929a640c8d82133a9a Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 13 Dec 2005 15:17:34 -0800 Subject: [PATCH] Driver core: Make block devices create the proper symlink name Block devices need to add the block device name to the symlink they put in the device directory, otherwise multiple symlinks of the same name can be created. This matches the class system, which works the same way, we just forgot to convert block at the same time. Cc: Pete Zaitcev Signed-off-by: Greg Kroah-Hartman --- fs/partitions/check.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 7187a57..7881ce0 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -336,12 +336,31 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) disk->part[part-1] = p; } +static char *make_block_name(struct gendisk *disk) +{ + char *name; + static char *block_str = "block:"; + int size; + + size = strlen(block_str) + strlen(disk->disk_name) + 1; + name = kmalloc(size, GFP_KERNEL); + if (!name) + return NULL; + strcpy(name, block_str); + strcat(name, disk->disk_name); + return name; +} + static void disk_sysfs_symlinks(struct gendisk *disk) { struct device *target = get_device(disk->driverfs_dev); if (target) { + char *disk_name = make_block_name(disk); sysfs_create_link(&disk->kobj,&target->kobj,"device"); - sysfs_create_link(&target->kobj,&disk->kobj,"block"); + if (disk_name) { + sysfs_create_link(&target->kobj,&disk->kobj,disk_name); + kfree(disk_name); + } } } @@ -461,8 +480,12 @@ void del_gendisk(struct gendisk *disk) devfs_remove_disk(disk); if (disk->driverfs_dev) { + char *disk_name = make_block_name(disk); sysfs_remove_link(&disk->kobj, "device"); - sysfs_remove_link(&disk->driverfs_dev->kobj, "block"); + if (disk_name) { + sysfs_remove_link(&disk->driverfs_dev->kobj, disk_name); + kfree(disk_name); + } put_device(disk->driverfs_dev); } kobject_uevent(&disk->kobj, KOBJ_REMOVE); -- cgit v1.1 From e80a5dea8e056d8f398be1900d61c581d379f02f Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 23 Nov 2005 09:15:44 -0500 Subject: [PATCH] sysfs: handle failures in sysfs_make_dirent I noticed that if sysfs_make_dirent fails to allocate the sd, then a null will be passed to sysfs_put. Signed-off-by: Steven Rostedt Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 59734ba..d367803 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -112,7 +112,11 @@ static int create_dir(struct kobject * k, struct dentry * p, } } if (error && (error != -EEXIST)) { - sysfs_put((*d)->d_fsdata); + struct sysfs_dirent *sd = (*d)->d_fsdata; + if (sd) { + list_del_init(&sd->s_sibling); + sysfs_put(sd); + } d_drop(*d); } dput(*d); -- cgit v1.1