linux-ext4 - [PATCH] ext4: start to support iopoll method

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Message-Id: <20200207120758.2411-1-xiaoguang.wang@linux.alibaba.com>
Date:   Fri,  7 Feb 2020 20:07:58 +0800
From:   Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>
To:     linux-ext4@...r.kernel.org
Cc:     tytso@....edu, jack@...e.cz,
        Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>
Subject: [PATCH] ext4: start to support iopoll method

Since commit "b1b4705d54ab ext4: introduce direct I/O read using
iomap infrastructure", we can easily make ext4 support iopoll
method, just use iomap_dio_iopoll().

Signed-off-by: Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>
---
 fs/ext4/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 5f225881176b..0d624250a62b 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -872,6 +872,7 @@ const struct file_operations ext4_file_operations = {
 	.llseek		= ext4_llseek,
 	.read_iter	= ext4_file_read_iter,
 	.write_iter	= ext4_file_write_iter,
+	.iopoll		= iomap_dio_iopoll,
 	.unlocked_ioctl = ext4_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext4_compat_ioctl,
-- 
2.17.2