diff mbox series

[199/200] mm: fix fall-through warnings for Clang

Message ID 20201215031500.vysL6-o3U%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [001/200] kthread: add kthread_work tracepoints | expand

Commit Message

Andrew Morton Dec. 15, 2020, 3:15 a.m. UTC
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: mm: fix fall-through warnings for Clang

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
Link: https://lkml.kernel.org/r/f5756988b8842a3f10008fbc5b0a654f828920a9.1605896059.git.gustavoars@kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

 mm/mm_init.c |    1 +
 mm/vmscan.c  |    1 +
 2 files changed, 2 insertions(+)
diff mbox series


--- a/mm/mm_init.c~mm-fix-fall-through-warnings-for-clang
+++ a/mm/mm_init.c
@@ -173,6 +173,7 @@  static int __meminit mm_compute_batch_no
 	case MEM_ONLINE:
+		break;
--- a/mm/vmscan.c~mm-fix-fall-through-warnings-for-clang
+++ a/mm/vmscan.c
@@ -1369,6 +1369,7 @@  static unsigned int shrink_page_list(str
 				if (PageDirty(page) || PageWriteback(page))
 					goto keep_locked;
 				mapping = page_mapping(page);
+				fallthrough;
 			case PAGE_CLEAN:
 				; /* try to free the page below */