treewide: Use fallthrough pseudo-keyword

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/signalfd.c b/fs/signalfd.c
index 5b78719be445..456046e15873 100644
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -176,7 +176,7 @@ static ssize_t signalfd_dequeue(struct signalfd_ctx *ctx, kernel_siginfo_t *info
 		if (!nonblock)
 			break;
 		ret = -EAGAIN;
-		/* fall through */
+		fallthrough;
 	default:
 		spin_unlock_irq(&current->sighand->siglock);
 		return ret;