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-rw-r--r--drivers/md/raid5.h15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index c2f37f25ef44..b2edcc434e41 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -337,11 +337,16 @@ struct raid5_private_data {
337 int raid_disks; 337 int raid_disks;
338 int max_nr_stripes; 338 int max_nr_stripes;
339 339
340 /* used during an expand */ 340 /* reshape_progress is the leading edge of a 'reshape'
341 sector_t expand_progress; /* MaxSector when no expand happening */ 341 * It has value MaxSector when no reshape is happening
342 sector_t expand_lo; /* from here up to expand_progress it out-of-bounds 342 * If delta_disks < 0, it is the last sector we started work on,
343 * as we haven't flushed the metadata yet 343 * else is it the next sector to work on.
344 */ 344 */
345 sector_t reshape_progress;
346 /* reshape_safe is the trailing edge of a reshape. We know that
347 * before (or after) this address, all reshape has completed.
348 */
349 sector_t reshape_safe;
345 int previous_raid_disks; 350 int previous_raid_disks;
346 351
347 struct list_head handle_list; /* stripes needing handling */ 352 struct list_head handle_list; /* stripes needing handling */