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mm: fix fall-through warnings for Clang

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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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Gustavo A. R. Silva 2020-12-14 19:15:00 -08:00 committed by Linus Torvalds
parent bf16d19aab
commit 01359eb201
2 changed files with 2 additions and 0 deletions
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1
mm/mm_init.c
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@ -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;
}

1
mm/vmscan.c
View File

@ -1369,6 +1369,7 @@ 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 */
}