diff options
| author | Gabriel de Perthuis | 2013-06-09 00:54:48 +0200 |
|---|---|---|
| committer | Kent Overstreet | 2013-06-26 21:58:06 -0700 |
| commit | ab9e14002e271eba41f7f9ab7e9b03cac4adc22d (patch) | |
| tree | 9ea2f05da65129fb96d4a4aead85986058b9f3e9 /drivers/md/bcache | |
| parent | a25c32bedeff3573b53572b87bcafe10ec5b75a9 (diff) | |
bcache: Send label uevents
Signed-off-by: Gabriel de Perthuis <g2p.code@gmail.com>
Signed-off-by: Kent Overstreet <koverstreet@google.com>
Diffstat (limited to 'drivers/md/bcache')
| -rw-r--r-- | drivers/md/bcache/super.c | 9 | ||||
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 9 |
2 files changed, 17 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index a104dad2c7fa..cff2d182dfb0 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -825,12 +825,18 @@ static void calc_cached_dev_sectors(struct cache_set *c) void bch_cached_dev_run(struct cached_dev *dc) { struct bcache_device *d = &dc->disk; + char buf[SB_LABEL_SIZE + 1]; char *env[] = { "DRIVER=bcache", kasprintf(GFP_KERNEL, "CACHED_UUID=%pU", dc->sb.uuid), - NULL + NULL, + NULL, }; + memcpy(buf, dc->sb.label, SB_LABEL_SIZE); + buf[SB_LABEL_SIZE] = '\0'; + env[2] = kasprintf(GFP_KERNEL, "CACHED_LABEL=%s", buf); + if (atomic_xchg(&dc->running, 1)) return; @@ -850,6 +856,7 @@ void bch_cached_dev_run(struct cached_dev *dc) * only class / kset properties are persistent */ kobject_uevent_env(&disk_to_dev(d->disk)->kobj, KOBJ_CHANGE, env); kfree(env[1]); + kfree(env[2]); if (sysfs_create_link(&d->kobj, &disk_to_dev(d->disk)->kobj, "dev") || sysfs_create_link(&disk_to_dev(d->disk)->kobj, &d->kobj, "bcache")) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 70c6dff0d0cd..dd3f00a42729 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -178,6 +178,7 @@ STORE(__cached_dev) disk.kobj); unsigned v = size; struct cache_set *c; + struct kobj_uevent_env *env; #define d_strtoul(var) sysfs_strtoul(var, dc->var) #define d_strtoi_h(var) sysfs_hatoi(var, dc->var) @@ -222,6 +223,7 @@ STORE(__cached_dev) } if (attr == &sysfs_label) { + /* note: endlines are preserved */ memcpy(dc->sb.label, buf, SB_LABEL_SIZE); bch_write_bdev_super(dc, NULL); if (dc->disk.c) { @@ -229,6 +231,13 @@ STORE(__cached_dev) buf, SB_LABEL_SIZE); bch_uuid_write(dc->disk.c); } + env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); + add_uevent_var(env, "DRIVER=bcache"); + add_uevent_var(env, "CACHED_UUID=%pU", dc->sb.uuid), + add_uevent_var(env, "CACHED_LABEL=%s", buf); + kobject_uevent_env( + &disk_to_dev(dc->disk.disk)->kobj, KOBJ_CHANGE, env->envp); + kfree(env); } if (attr == &sysfs_attach) { |