linux-kernel - [PATCH] fs/direct-io: Remove linux/prefetch.h include

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Date: Mon,  3 Jun 2024 09:48:34 +0800
From: Youling Tang <youling.tang@...ux.dev>
To: Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>
Cc: Jan Kara <jack@...e.cz>,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Youling Tang <tangyouling@...inos.cn>
Subject: [PATCH] fs/direct-io: Remove linux/prefetch.h include

From: Youling Tang <tangyouling@...inos.cn>

After commit c22198e78d52 ("direct-io: remove random prefetches"), Nothing
in this file needs anything from `linux/prefetch.h`.

Signed-off-by: Youling Tang <tangyouling@...inos.cn>
---
 fs/direct-io.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/fs/direct-io.c b/fs/direct-io.c
index b0aafe640fa4..bbd05f1a2145 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -37,7 +37,6 @@
 #include <linux/rwsem.h>
 #include <linux/uio.h>
 #include <linux/atomic.h>
-#include <linux/prefetch.h>
 
 #include "internal.h"
 
@@ -1121,11 +1120,6 @@ ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
 	struct blk_plug plug;
 	unsigned long align = offset | iov_iter_alignment(iter);
 
-	/*
-	 * Avoid references to bdev if not absolutely needed to give
-	 * the early prefetch in the caller enough time.
-	 */
-
 	/* watch out for a 0 len io from a tricksy fs */
 	if (iov_iter_rw(iter) == READ && !count)
 		return 0;
-- 
2.34.1