[PATCH 041/141] mm: Fix fall-through warnings for Clang

[Gustavo A. R. Silva]

In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
of warnings by explicitly adding a break statement instead of just letting
the code fall through to the next, and by adding a fallthrough
pseudo-keyword in places where the code is intended to fall through.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavo...@kernel.org>
---
 mm/mm_init.c | 1 +
 mm/vmscan.c  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/mm/mm_init.c b/mm/mm_init.c
index b06a30fbedff..8e02e865cc65 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -173,6 +173,7 @@ static int __meminit mm_compute_batch_notifier(struct 
notifier_block *self,
        case MEM_ONLINE:
        case MEM_OFFLINE:
                mm_compute_batch(sysctl_overcommit_memory);
+               break;
        default:
                break;
        }
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7b4e31eac2cf..a55c96891549 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1372,6 +1372,7 @@ static unsigned int shrink_page_list(struct list_head 
*page_list,
                                if (PageDirty(page) || PageWriteback(page))
                                        goto keep_locked;
                                mapping = page_mapping(page);
+                               fallthrough;
                        case PAGE_CLEAN:
                                ; /* try to free the page below */
                        }
-- 
2.27.0