Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 14 insertions, 27 deletions

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 1a6cb3c7822e..9924ea23032d 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -12,6 +12,7 @@
 #include <linux/blkdev.h>
 #include <linux/namei.h>
 #include <linux/ctype.h>
+#include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
@@ -237,6 +238,9 @@ void dm_table_destroy(struct dm_table *t)
 {
         unsigned int i;
 
+        if (!t)
+                return;
+
         while (atomic_read(&t->holders))
                 msleep(1);
         smp_mb();
@@ -425,8 +429,7 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
  * it's already present.
  */
 static int __table_get_device(struct dm_table *t, struct dm_target *ti,
-                              const char *path, sector_t start, sector_t len,
-                              fmode_t mode, struct dm_dev **result)
+                      const char *path, fmode_t mode, struct dm_dev **result)
 {
         int r;
         dev_t uninitialized_var(dev);
@@ -499,16 +502,15 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
                 return 0;
         }
 
-        if (blk_stack_limits(limits, &q->limits, start << 9) < 0)
-                DMWARN("%s: target device %s is misaligned: "
+        if (bdev_stack_limits(limits, bdev, start) < 0)
+                DMWARN("%s: adding target device %s caused an alignment inconsistency: "
                        "physical_block_size=%u, logical_block_size=%u, "
                        "alignment_offset=%u, start=%llu",
                        dm_device_name(ti->table->md), bdevname(bdev, b),
                        q->limits.physical_block_size,
                        q->limits.logical_block_size,
                        q->limits.alignment_offset,
-                       (unsigned long long) start << 9);
-
+                       (unsigned long long) start << SECTOR_SHIFT);
 
         /*
          * Check if merge fn is supported.
@@ -524,11 +526,10 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
 }
 EXPORT_SYMBOL_GPL(dm_set_device_limits);
 
-int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
-                  sector_t len, fmode_t mode, struct dm_dev **result)
+int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,
+                  struct dm_dev **result)
 {
-        return __table_get_device(ti->table, ti, path,
-                                  start, len, mode, result);
+        return __table_get_device(ti->table, ti, path, mode, result);
 }
 
 
@@ -600,11 +601,8 @@ int dm_split_args(int *argc, char ***argvp, char *input)
                 return -ENOMEM;
 
         while (1) {
-                start = end;
-
                 /* Skip whitespace */
-                while (*start && isspace(*start))
-                        start++;
+                start = skip_spaces(end);
 
                 if (!*start)
                         break;  /* success, we hit the end */
@@ -1025,9 +1023,9 @@ combine_limits:
                  * for the table.
                  */
                 if (blk_stack_limits(limits, &ti_limits, 0) < 0)
-                        DMWARN("%s: target device "
+                        DMWARN("%s: adding target device "
                                "(start sect %llu len %llu) "
-                               "is misaligned",
+                               "caused an alignment inconsistency",
                                dm_device_name(table->md),
                                (unsigned long long) ti->begin,
                                (unsigned long long) ti->len);
@@ -1079,15 +1077,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
                                struct queue_limits *limits)
 {
         /*
-         * Each target device in the table has a data area that should normally
-         * be aligned such that the DM device's alignment_offset is 0.
-         * FIXME: Propagate alignment_offsets up the stack and warn of
-         *        sub-optimal or inconsistent settings.
-         */
-        limits->alignment_offset = 0;
-        limits->misaligned = 0;
-
-        /*
          * Copy table's limits to the DM device's request_queue
          */
         q->limits = *limits;
@@ -1240,8 +1229,6 @@ void dm_table_unplug_all(struct dm_table *t)
 
 struct mapped_device *dm_table_get_md(struct dm_table *t)
 {
-        dm_get(t->md);
-
         return t->md;
 }