block: re-use existing 'reading' variable instead of checking direction again

[pandora-kernel.git] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index 94855a9..02e9fca 100644 (file)
--- 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"
 
@@ -537,7 +536,7 @@ void register_disk(struct gendisk *disk)
        disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj);
 
        /* No minors to use for partitions */
-       if (!disk_partitionable(disk))
+       if (!disk_part_scan_enabled(disk))
                goto exit;
 
        /* No such device (e.g., media were just removed) */
@@ -612,6 +611,12 @@ void add_disk(struct gendisk *disk)
        register_disk(disk);
        blk_register_queue(disk);
 
+       /*
+        * Take an extra ref on queue which will be put on disk_release()
+        * so that it sticks around as long as @disk is there.
+        */
+       WARN_ON_ONCE(blk_get_queue(disk->queue));
+
        retval = sysfs_create_link(&disk_to_dev(disk)->kobj, &bdi->dev->kobj,
                                   "bdi");
        WARN_ON(retval);
@@ -842,7 +847,7 @@ static int show_partition(struct seq_file *seqf, void *v)
        char buf[BDEVNAME_SIZE];
 
        /* Don't show non-partitionable removeable devices or empty devices */
-       if (!get_capacity(sgp) || (!disk_partitionable(sgp) &&
+       if (!get_capacity(sgp) || (!disk_max_parts(sgp) &&
                                   (sgp->flags & GENHD_FL_REMOVABLE)))
                return 0;
        if (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO)
@@ -910,74 +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)
 {
@@ -1037,7 +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);
@@ -1060,7 +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,
@@ -1166,6 +1101,8 @@ static void disk_release(struct device *dev)
        disk_replace_part_tbl(disk, NULL);
        free_part_stats(&disk->part0);
        free_part_info(&disk->part0);
+       if (disk->queue)
+               blk_put_queue(disk->queue);
        kfree(disk);
 }
 struct class block_class = {