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-rw-r--r--Documentation/ABI/testing/sysfs-block13
-rw-r--r--block/genhd.c71
-rw-r--r--include/linux/genhd.h4
3 files changed, 0 insertions, 88 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
index 2b5d56127fce..c1eb41cb9876 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -206,16 +206,3 @@ Description:
when a discarded area is read the discard_zeroes_data
parameter will be set to one. Otherwise it will be 0 and
the result of reading a discarded area is undefined.
-What: /sys/block/<disk>/alias
-Date: Aug 2011
-Contact: Nao Nishijima <nao.nishijima.xt@hitachi.com>
-Description:
- A raw device name of a disk does not always point a same disk
- each boot-up time. Therefore, users have to use persistent
- device names, which udev creates when the kernel finds a disk,
- instead of raw device name. However, kernel doesn't show those
- persistent names on its messages (e.g. dmesg).
- This file can store an alias of the disk and it would be
- appeared in kernel messages if it is set. A disk can have an
- alias which length is up to 255bytes. Users can use alphabets,
- numbers, "-" and "_" in alias name. This file is writeonce.
diff --git a/block/genhd.c b/block/genhd.c
index 9253839714ff..02e9fca80825 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -19,7 +19,6 @@
#include <linux/mutex.h>
#include <linux/idr.h>
#include <linux/log2.h>
-#include <linux/ctype.h>
#include "blk.h"
@@ -916,74 +915,6 @@ static int __init genhd_device_init(void)
subsys_initcall(genhd_device_init);
-static ssize_t alias_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct gendisk *disk = dev_to_disk(dev);
- ssize_t ret = 0;
-
- if (disk->alias)
- ret = snprintf(buf, ALIAS_LEN, "%s\n", disk->alias);
- return ret;
-}
-
-static ssize_t alias_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct gendisk *disk = dev_to_disk(dev);
- char *alias;
- char *envp[] = { NULL, NULL };
- unsigned char c;
- int i;
- ssize_t ret = count;
-
- if (!count)
- return -EINVAL;
-
- if (count >= ALIAS_LEN) {
- printk(KERN_ERR "alias: alias is too long\n");
- return -EINVAL;
- }
-
- /* Validation check */
- for (i = 0; i < count; i++) {
- c = buf[i];
- if (i == count - 1 && c == '\n')
- break;
- if (!isalnum(c) && c != '_' && c != '-') {
- printk(KERN_ERR "alias: invalid alias\n");
- return -EINVAL;
- }
- }
-
- if (disk->alias) {
- printk(KERN_INFO "alias: %s is already assigned (%s)\n",
- disk->disk_name, disk->alias);
- return -EINVAL;
- }
-
- alias = kasprintf(GFP_KERNEL, "%s", buf);
- if (!alias)
- return -ENOMEM;
-
- if (alias[count - 1] == '\n')
- alias[count - 1] = '\0';
-
- envp[0] = kasprintf(GFP_KERNEL, "ALIAS=%s", alias);
- if (!envp[0]) {
- kfree(alias);
- return -ENOMEM;
- }
-
- disk->alias = alias;
- printk(KERN_INFO "alias: assigned %s to %s\n", alias, disk->disk_name);
-
- kobject_uevent_env(&dev->kobj, KOBJ_ADD, envp);
-
- kfree(envp[0]);
- return ret;
-}
-
static ssize_t disk_range_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1043,7 +974,6 @@ static ssize_t disk_discard_alignment_show(struct device *dev,
return sprintf(buf, "%d\n", queue_discard_alignment(disk->queue));
}
-static DEVICE_ATTR(alias, S_IRUGO|S_IWUSR, alias_show, alias_store);
static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL);
static DEVICE_ATTR(ext_range, S_IRUGO, disk_ext_range_show, NULL);
static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL);
@@ -1066,7 +996,6 @@ static struct device_attribute dev_attr_fail_timeout =
#endif
static struct attribute *disk_attrs[] = {
- &dev_attr_alias.attr,
&dev_attr_range.attr,
&dev_attr_ext_range.attr,
&dev_attr_removable.attr,
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 9de31bc98c88..6d18f3531f18 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -21,8 +21,6 @@
#define dev_to_part(device) container_of((device), struct hd_struct, __dev)
#define disk_to_dev(disk) (&(disk)->part0.__dev)
#define part_to_dev(part) (&((part)->__dev))
-#define alias_name(disk) ((disk)->alias ? (disk)->alias : \
- (disk)->disk_name)
extern struct device_type part_type;
extern struct kobject *block_depr;
@@ -60,7 +58,6 @@ enum {
#define DISK_MAX_PARTS 256
#define DISK_NAME_LEN 32
-#define ALIAS_LEN 256
#include <linux/major.h>
#include <linux/device.h>
@@ -166,7 +163,6 @@ struct gendisk {
* disks that can't be partitioned. */
char disk_name[DISK_NAME_LEN]; /* name of major driver */
- char *alias; /* alias name of disk */
char *(*devnode)(struct gendisk *gd, mode_t *mode);
unsigned int events; /* supported events */