Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md: (53 commits)
  md/raid5 revise rules for when to update metadata during reshape
  md/raid5: minor code cleanups in make_request.
  md: remove CONFIG_MD_RAID_RESHAPE config option.
  md/raid5: be more careful about write ordering when reshaping.
  md: don't display meaningless values in sysfs files resync_start and sync_speed
  md/raid5: allow layout and chunksize to be changed on active array.
  md/raid5: reshape using largest of old and new chunk size
  md/raid5: prepare for allowing reshape to change layout
  md/raid5: prepare for allowing reshape to change chunksize.
  md/raid5: clearly differentiate 'before' and 'after' stripes during reshape.
  Documentation/md.txt update
  md: allow number of drives in raid5 to be reduced
  md/raid5: change reshape-progress measurement to cope with reshaping backwards.
  md: add explicit method to signal the end of a reshape.
  md/raid5: enhance raid5_size to work correctly with negative delta_disks
  md/raid5: drop qd_idx from r6_state
  md/raid6: move raid6 data processing to raid6_pq.ko
  md: raid5 run(): Fix max_degraded for raid level 4.
  md: 'array_size' sysfs attribute
  md: centralize ->array_sectors modifications
  ...

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/md/linear.h b/drivers/md/linear.h
new file mode 100644
index 00000000000..bf8179587f9
--- /dev/null
+++ b/drivers/md/linear.h
@@ -0,0 +1,29 @@
+#ifndef _LINEAR_H
+#define _LINEAR_H
+
+struct dev_info {
+	mdk_rdev_t	*rdev;
+	sector_t	num_sectors;
+	sector_t	start_sector;
+};
+
+typedef struct dev_info dev_info_t;
+
+struct linear_private_data
+{
+	struct linear_private_data *prev;	/* earlier version */
+	dev_info_t		**hash_table;
+	sector_t		spacing;
+	sector_t		array_sectors;
+	int			sector_shift;	/* shift before dividing
+						 * by spacing
+						 */
+	dev_info_t		disks[0];
+};
+
+
+typedef struct linear_private_data linear_conf_t;
+
+#define mddev_to_conf(mddev) ((linear_conf_t *) mddev->private)
+
+#endif