linux-kernel - [PATCH 1/3] fs: annotate implicit fall throughs

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Date:   Mon, 14 Jan 2019 21:38:56 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Alexander Viro <viro@...iv.linux.org.uk>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Jeff Layton <jlayton@...nel.org>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] fs: annotate implicit fall throughs

There is a plan to build the kernel with -Wimplicit-fallthrough and
these places in the code produced warnings (W=1). Fix them up.

This commit remove the following warnings:

  fs/libfs.c:148:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
  fs/libfs.c:150:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
 fs/libfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/libfs.c b/fs/libfs.c
index 0fb590d79f30..9efb647917e0 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -146,9 +146,11 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
 	switch (whence) {
 		case 1:
 			offset += file->f_pos;
+			/* fall through */
 		case 0:
 			if (offset >= 0)
 				break;
+			/* fall through */
 		default:
 			return -EINVAL;
 	}
-- 
2.19.2