From 1c98679db94155a145f8389f9aaee30c99dbbd5a Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Mon, 22 Mar 2021 01:58:31 +0000
Subject: [PATCH] io_uring: optimise kiocb_end_write for !ISREG
file_end_write() is only for regular files, so the function do a couple
of dereferences to get inode and check for it. However, we already have
REQ_F_ISREG at hand, just use it and inline file_end_write().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 605f253e8f939..a3a0348ab6eb7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2431,11 +2431,11 @@ static void kiocb_end_write(struct io_kiocb *req)
* thread.
*/
if (req->flags & REQ_F_ISREG) {
- struct inode *inode = file_inode(req->file);
+ struct super_block *sb = file_inode(req->file)->i_sb;
- __sb_writers_acquired(inode->i_sb, SB_FREEZE_WRITE);
+ __sb_writers_acquired(sb, SB_FREEZE_WRITE);
+ sb_end_write(sb);
}
- file_end_write(req->file);
}
#ifdef CONFIG_BLOCK
--
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