linux-ext4 - [PATCH 06/16] fuse2fs: only flush the cache for the file under directio read

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Message-ID: <174787198541.1484996.8140909890324412388.stgit@frogsfrogsfrogs>
Date: Wed, 21 May 2025 17:12:24 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: tytso@....edu
Cc: John@...ves.net, linux-ext4@...r.kernel.org, miklos@...redi.hu,
 joannelkoong@...il.com, bernd@...ernd.com, linux-fsdevel@...r.kernel.org
Subject: [PATCH 06/16] fuse2fs: only flush the cache for the file under
 directio read

From: Darrick J. Wong <djwong@...nel.org>

We only need to flush the io_channel's cache for the file that's being
read directly, not everything else.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 misc/fuse2fs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index c0f868e8f01ed4..3ec99310b0f112 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -4957,7 +4957,7 @@ static int fuse_iomap_begin_read(struct fuse2fs *ff, ext2_ino_t ino,
 		return -ENOSYS;

 	/* flush dirty io_channel buffers to disk before iomap reads them */
-	err = io_channel_flush(ff->fs->io);
+	err = io_channel_flush_tag(ff->fs->io, ino);
 	if (err)
 		return translate_error(ff->fs, ino, err);