mm-shmem-fix-race-in-shmem_undo_range-w-thp-fix

tidy up comment layout

Cc: David Stevens <stevensd@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/shmem.c

@@ -1035,10 +1035,12 @@ static void shmem_undo_range(struct inode *inode, loff_t lstart, loff_t lend,
 					truncate_inode_folio(mapping, folio);
 				} else if (truncate_inode_partial_folio(folio, lstart, lend)) {
 					/*
-					 * If we split a page, reset the loop so that we
-					 * pick up the new sub pages. Otherwise the THP
-					 * was entirely dropped or the target range was
-					 * zeroed, so just continue the loop as is.
+					 * If we split a page, reset the loop so
+					 * that we pick up the new sub pages.
+					 * Otherwise the THP was entirely
+					 * dropped or the target range was
+					 * zeroed, so just continue the loop as
+					 * is.
 					 */
 					if (!folio_test_large(folio)) {
 						folio_unlock(folio);