md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*

Convert macro STRIPE_SIZE, STRIPE_SECTORS and STRIPE_SHIFT to
RAID5_STRIPE_SIZE(), RAID5_STRIPE_SECTORS() and RAID5_STRIPE_SHIFT().

This patch is prepare for the following adjustable stripe_size.
It will not change any existing functionality.

Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

drivers/md/raid5-cache.c

@@ -296,8 +296,8 @@ r5c_return_dev_pending_writes(struct r5conf *conf, struct r5dev *dev)
 	wbi = dev->written;
 	dev->written = NULL;
 	while (wbi && wbi->bi_iter.bi_sector <
-	       dev->sector + STRIPE_SECTORS) {
-		wbi2 = r5_next_bio(wbi, dev->sector);
+	       dev->sector + RAID5_STRIPE_SECTORS(conf)) {
+		wbi2 = r5_next_bio(conf, wbi, dev->sector);
 		md_write_end(conf->mddev);
 		bio_endio(wbi);
 		wbi = wbi2;
@@ -314,7 +314,7 @@ void r5c_handle_cached_data_endio(struct r5conf *conf,
 			set_bit(R5_UPTODATE, &sh->dev[i].flags);
 			r5c_return_dev_pending_writes(conf, &sh->dev[i]);
 			md_bitmap_endwrite(conf->mddev->bitmap, sh->sector,
-					   STRIPE_SECTORS,
+					   RAID5_STRIPE_SECTORS(conf),
 					   !test_bit(STRIPE_DEGRADED, &sh->state),
 					   0);
 		}
@@ -362,7 +362,7 @@ void r5c_check_cached_full_stripe(struct r5conf *conf)
 	 */
 	if (atomic_read(&conf->r5c_cached_full_stripes) >=
 	    min(R5C_FULL_STRIPE_FLUSH_BATCH(conf),
-		conf->chunk_sectors >> STRIPE_SHIFT))
+		conf->chunk_sectors >> RAID5_STRIPE_SHIFT(conf)))
 		r5l_wake_reclaim(conf->log, 0);
 }
 

drivers/md/raid5-ppl.c

@@ -324,7 +324,7 @@ static int ppl_log_stripe(struct ppl_log *log, struct stripe_head *sh)
 		 * be just after the last logged stripe and write to the same
 		 * disks. Use bit shift and logarithm to avoid 64-bit division.
 		 */
-		if ((sh->sector == sh_last->sector + STRIPE_SECTORS) &&
+		if ((sh->sector == sh_last->sector + RAID5_STRIPE_SECTORS(conf)) &&
 		    (data_sector >> ilog2(conf->chunk_sectors) ==
 		     data_sector_last >> ilog2(conf->chunk_sectors)) &&
 		    ((data_sector - data_sector_last) * data_disks ==
@@ -844,9 +844,9 @@ static int ppl_recover_entry(struct ppl_log *log, struct ppl_header_entry *e,
 
 	/* if start and end is 4k aligned, use a 4k block */
 	if (block_size == 512 &&
-	    (r_sector_first & (STRIPE_SECTORS - 1)) == 0 &&
-	    (r_sector_last & (STRIPE_SECTORS - 1)) == 0)
-		block_size = STRIPE_SIZE;
+	    (r_sector_first & (RAID5_STRIPE_SECTORS(conf) - 1)) == 0 &&
+	    (r_sector_last & (RAID5_STRIPE_SECTORS(conf) - 1)) == 0)
+		block_size = RAID5_STRIPE_SIZE(conf);
 
 	/* iterate through blocks in strip */
 	for (i = 0; i < strip_sectors; i += (block_size >> 9)) {
@@ -1274,7 +1274,8 @@ static int ppl_validate_rdev(struct md_rdev *rdev)
 	ppl_data_sectors = rdev->ppl.size - (PPL_HEADER_SIZE >> 9);
 
 	if (ppl_data_sectors > 0)
-		ppl_data_sectors = rounddown(ppl_data_sectors, STRIPE_SECTORS);
+		ppl_data_sectors = rounddown(ppl_data_sectors,
+				RAID5_STRIPE_SECTORS((struct r5conf *)rdev->mddev->private));
 
 	if (ppl_data_sectors <= 0) {
 		pr_warn("md/raid:%s: PPL space too small on %s\n",