md: Avoid namespace collision with bitmap API

bitmap API (include/linux/bitmap.h) has 'bitmap' prefix for its methods.

On the other hand MD bitmap API is special case.
Adding 'md' prefix to it to avoid name space collision.

No functional changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Shaohua Li <shli@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/md/dm-raid.c

@@ -3859,7 +3859,7 @@ static int __load_dirty_region_bitmap(struct raid_set *rs)
 	/* Try loading the bitmap unless "raid0", which does not have one */
 	if (!rs_is_raid0(rs) &&
 	    !test_and_set_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags)) {
-		r = bitmap_load(&rs->md);
+		r = md_bitmap_load(&rs->md);
 		if (r)
 			DMERR("Failed to load bitmap");
 	}
@@ -3987,8 +3987,8 @@ static int raid_preresume(struct dm_target *ti)
 	/* Resize bitmap to adjust to changed region size (aka MD bitmap chunksize) */
 	if (test_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags) && mddev->bitmap &&
 	    mddev->bitmap_info.chunksize != to_bytes(rs->requested_bitmap_chunk_sectors)) {
-		r = bitmap_resize(mddev->bitmap, mddev->dev_sectors,
-				  to_bytes(rs->requested_bitmap_chunk_sectors), 0);
+		r = md_bitmap_resize(mddev->bitmap, mddev->dev_sectors,
+				     to_bytes(rs->requested_bitmap_chunk_sectors), 0);
 		if (r)
 			DMERR("Failed to resize bitmap");
 	}