linux-ext4 - [PATCH 5/8] fuse2fs: don't truncate when creating a new file

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Message-ID: <175182663059.1984706.11656403223439904537.stgit@frogsfrogsfrogs>
Date: Sun, 06 Jul 2025 11:32:03 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: tytso@....edu
Cc: linux-ext4@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: [PATCH 5/8] fuse2fs: don't truncate when creating a new file

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

New files can't have contents, so there's no need to truncate them,
which then messes with ctime/mtime.

Cc: <linux-ext4@...r.kernel.org> # v1.43
Fixes: 81cbf1ef4f5dab ("misc: add fuse2fs, a FUSE server for e2fsprogs")
Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 misc/fuse2fs.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index 0e9576b6ca6aa7..5b866aed98237f 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -3376,6 +3376,7 @@ static int op_create(const char *path, mode_t mode, struct fuse_file_info *fp)
 	if (ret)
 		goto out2;

+	fp->flags &= ~O_TRUNC;
 	ret = __op_open(ff, path, fp);
 	if (ret)
 		goto out2;