Merge branch 'master'

4 files changed, 17 insertions, 98 deletions

diff --git a/block/Kconfig b/block/Kconfig
index 5536839886..b6f5f0a796 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -27,10 +27,10 @@ config BLK_DEV_IO_TRACE
 config LSF
         bool "Support for Large Single Files"
         depends on X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML
-        default n
         help
-          When CONFIG_LBD is disabled, say Y here if you want to
-          handle large file(bigger than 2TB), otherwise say N.
-          When CONFIG_LBD is enabled, Y is set automatically.
+          Say Y here if you want to be able to handle very large files (bigger
+          than 2TB), otherwise say N.
+
+          If unsure, say Y.
 
 source block/Kconfig.iosched
diff --git a/block/elevator.c b/block/elevator.c
index 56c2ed06a9..0d6be03d92 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -145,7 +145,7 @@ static int __init elevator_setup(char *str)
                 strcpy(chosen_elevator, "anticipatory");
         else
                 strncpy(chosen_elevator, str, sizeof(chosen_elevator) - 1);
-        return 0;
+        return 1;
 }
 
 __setup("elevator=", elevator_setup);
diff --git a/block/genhd.c b/block/genhd.c
index db4c60c802..5a8d3bf02f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -17,8 +17,6 @@
 #include <linux/buffer_head.h>
 #include <linux/mutex.h>
 
-#define MAX_PROBE_HASH 255      /* random */
-
 static struct subsystem block_subsys;
 
 static DEFINE_MUTEX(block_subsys_lock);
@@ -31,108 +29,29 @@ static struct blk_major_name {
         struct blk_major_name *next;
         int major;
         char name[16];
-} *major_names[MAX_PROBE_HASH];
+} *major_names[BLKDEV_MAJOR_HASH_SIZE];
 
 /* index in the above - for now: assume no multimajor ranges */
 static inline int major_to_index(int major)
 {
-        return major % MAX_PROBE_HASH;
-}
-
-struct blkdev_info {
-        int index;
-        struct blk_major_name *bd;
-};
-
-/*
- * iterate over a list of blkdev_info structures.  allows
- * the major_names array to be iterated over from outside this file
- * must be called with the block_subsys_lock held
- */
-void *get_next_blkdev(void *dev)
-{
-        struct blkdev_info *info;
-
-        if (dev == NULL) {
-                info = kmalloc(sizeof(*info), GFP_KERNEL);
-                if (!info)
-                        goto out;
-                info->index=0;
-                info->bd = major_names[info->index];
-                if (info->bd)
-                        goto out;
-        } else {
-                info = dev;
-        }
-
-        while (info->index < ARRAY_SIZE(major_names)) {
-                if (info->bd)
-                        info->bd = info->bd->next;
-                if (info->bd)
-                        goto out;
-                /*
-                 * No devices on this chain, move to the next
-                 */
-                info->index++;
-                info->bd = (info->index < ARRAY_SIZE(major_names)) ?
-                        major_names[info->index] : NULL;
-                if (info->bd)
-                        goto out;
-        }
-
-out:
-        return info;
-}
-
-void *acquire_blkdev_list(void)
-{
-        mutex_lock(&block_subsys_lock);
-        return get_next_blkdev(NULL);
-}
-
-void release_blkdev_list(void *dev)
-{
-        mutex_unlock(&block_subsys_lock);
-        kfree(dev);
+        return major % BLKDEV_MAJOR_HASH_SIZE;
 }
 
+#ifdef CONFIG_PROC_FS
 
-/*
- * Count the number of records in the blkdev_list.
- * must be called with the block_subsys_lock held
- */
-int count_blkdev_list(void)
+void blkdev_show(struct seq_file *f, off_t offset)
 {
-        struct blk_major_name *n;
-        int i, count;
+        struct blk_major_name *dp;
 
-        count = 0;
-
-        for (i = 0; i < ARRAY_SIZE(major_names); i++) {
-                for (n = major_names[i]; n; n = n->next)
-                                count++;
+        if (offset < BLKDEV_MAJOR_HASH_SIZE) {
+                mutex_lock(&block_subsys_lock);
+                for (dp = major_names[offset]; dp; dp = dp->next)
+                        seq_printf(f, "%3d %s\n", dp->major, dp->name);
+                mutex_unlock(&block_subsys_lock);
         }
-
-        return count;
-}
-
-/*
- * extract the major and name values from a blkdev_info struct
- * passed in as a void to *dev.  Must be called with
- * block_subsys_lock held
- */
-int get_blkdev_info(void *dev, int *major, char **name)
-{
-        struct blkdev_info *info = dev;
-
-        if (info->bd == NULL)
-                return 1;
-
-        *major = info->bd->major;
-        *name = info->bd->name;
-        return 0;
 }
 
+#endif /* CONFIG_PROC_FS */
 
 int register_blkdev(unsigned int major, const char *name)
 {
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 5b26af8597..e112d1a5da 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -1740,7 +1740,7 @@ EXPORT_SYMBOL(blk_run_queue);
 
 /**
  * blk_cleanup_queue: - release a &request_queue_t when it is no longer needed
- * @q:    the request queue to be released
+ * @kobj:    the kobj belonging of the request queue to be released
  *
  * Description:
  *     blk_cleanup_queue is the pair to blk_init_queue() or