svcrpc: treat uid's as unsigned

[safe/jmp/linux-2.6] / block / blk-integrity.c

diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 3f1a847..15c6308 100644 (file)
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -108,51 +108,51 @@ new_segment:
 EXPORT_SYMBOL(blk_rq_map_integrity_sg);
 
 /**
- * blk_integrity_compare - Compare integrity profile of two block devices
- * @b1:                Device to compare
- * @b2:                Device to compare
+ * blk_integrity_compare - Compare integrity profile of two disks
+ * @gd1:       Disk to compare
+ * @gd2:       Disk to compare
  *
  * Description: Meta-devices like DM and MD need to verify that all
  * sub-devices use the same integrity format before advertising to
  * upper layers that they can send/receive integrity metadata.  This
- * function can be used to check whether two block devices have
+ * function can be used to check whether two gendisk devices have
  * compatible integrity formats.
  */
-int blk_integrity_compare(struct block_device *bd1, struct block_device *bd2)
+int blk_integrity_compare(struct gendisk *gd1, struct gendisk *gd2)
 {
-       struct blk_integrity *b1 = bd1->bd_disk->integrity;
-       struct blk_integrity *b2 = bd2->bd_disk->integrity;
+       struct blk_integrity *b1 = gd1->integrity;
+       struct blk_integrity *b2 = gd2->integrity;
 
-       BUG_ON(bd1->bd_disk == NULL);
-       BUG_ON(bd2->bd_disk == NULL);
+       if (!b1 && !b2)
+               return 0;
 
        if (!b1 || !b2)
-               return 0;
+               return -1;
 
        if (b1->sector_size != b2->sector_size) {
                printk(KERN_ERR "%s: %s/%s sector sz %u != %u\n", __func__,
-                      bd1->bd_disk->disk_name, bd2->bd_disk->disk_name,
+                      gd1->disk_name, gd2->disk_name,
                       b1->sector_size, b2->sector_size);
                return -1;
        }
 
        if (b1->tuple_size != b2->tuple_size) {
                printk(KERN_ERR "%s: %s/%s tuple sz %u != %u\n", __func__,
-                      bd1->bd_disk->disk_name, bd2->bd_disk->disk_name,
+                      gd1->disk_name, gd2->disk_name,
                       b1->tuple_size, b2->tuple_size);
                return -1;
        }
 
        if (b1->tag_size && b2->tag_size && (b1->tag_size != b2->tag_size)) {
                printk(KERN_ERR "%s: %s/%s tag sz %u != %u\n", __func__,
-                      bd1->bd_disk->disk_name, bd2->bd_disk->disk_name,
+                      gd1->disk_name, gd2->disk_name,
                       b1->tag_size, b2->tag_size);
                return -1;
        }
 
        if (strcmp(b1->name, b2->name)) {
                printk(KERN_ERR "%s: %s/%s type %s != %s\n", __func__,
-                      bd1->bd_disk->disk_name, bd2->bd_disk->disk_name,
+                      gd1->disk_name, gd2->disk_name,
                       b1->name, b2->name);
                return -1;
        }
@@ -309,29 +309,30 @@ static struct kobj_type integrity_ktype = {
 /**
  * blk_integrity_register - Register a gendisk as being integrity-capable
  * @disk:      struct gendisk pointer to make integrity-aware
- * @template:  integrity profile
+ * @template:  optional integrity profile to register
  *
  * Description: When a device needs to advertise itself as being able
  * to send/receive integrity metadata it must use this function to
  * register the capability with the block layer.  The template is a
  * blk_integrity struct with values appropriate for the underlying
- * hardware.  See Documentation/block/data-integrity.txt.
+ * hardware.  If template is NULL the new profile is allocated but
+ * not filled out. See Documentation/block/data-integrity.txt.
  */
 int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template)
 {
        struct blk_integrity *bi;
 
        BUG_ON(disk == NULL);
-       BUG_ON(template == NULL);
 
        if (disk->integrity == NULL) {
                bi = kmem_cache_alloc(integrity_cachep,
-                                               GFP_KERNEL | __GFP_ZERO);
+                                     GFP_KERNEL | __GFP_ZERO);
                if (!bi)
                        return -1;
 
                if (kobject_init_and_add(&bi->kobj, &integrity_ktype,
-                                        &disk->dev.kobj, "%s", "integrity")) {
+                                        &disk_to_dev(disk)->kobj,
+                                        "%s", "integrity")) {
                        kmem_cache_free(integrity_cachep, bi);
                        return -1;
                }
@@ -339,19 +340,22 @@ int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template)
                kobject_uevent(&bi->kobj, KOBJ_ADD);
 
                bi->flags |= INTEGRITY_FLAG_READ | INTEGRITY_FLAG_WRITE;
-               bi->sector_size = disk->queue->hardsect_size;
+               bi->sector_size = queue_logical_block_size(disk->queue);
                disk->integrity = bi;
        } else
                bi = disk->integrity;
 
        /* Use the provided profile as template */
-       bi->name = template->name;
-       bi->generate_fn = template->generate_fn;
-       bi->verify_fn = template->verify_fn;
-       bi->tuple_size = template->tuple_size;
-       bi->set_tag_fn = template->set_tag_fn;
-       bi->get_tag_fn = template->get_tag_fn;
-       bi->tag_size = template->tag_size;
+       if (template != NULL) {
+               bi->name = template->name;
+               bi->generate_fn = template->generate_fn;
+               bi->verify_fn = template->verify_fn;
+               bi->tuple_size = template->tuple_size;
+               bi->set_tag_fn = template->set_tag_fn;
+               bi->get_tag_fn = template->get_tag_fn;
+               bi->tag_size = template->tag_size;
+       } else
+               bi->name = "unsupported";
 
        return 0;
 }
@@ -375,7 +379,8 @@ void blk_integrity_unregister(struct gendisk *disk)
 
        kobject_uevent(&bi->kobj, KOBJ_REMOVE);
        kobject_del(&bi->kobj);
-       kobject_put(&disk->dev.kobj);
+       kobject_put(&bi->kobj);
        kmem_cache_free(integrity_cachep, bi);
+       disk->integrity = NULL;
 }
 EXPORT_SYMBOL(blk_integrity_unregister);