This is a note to let you know that I've just added the patch titled
backing-file: convert to using fops->splice_write
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
backing-file-convert-to-using-fops-splice_write.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 511cf885ff52fe6eee75c1825222f042335fce06
Author: Ed Tsai <ed.tsai@xxxxxxxxxxxx>
Date: Mon Jul 8 15:22:06 2024 +0800
backing-file: convert to using fops->splice_write
[ Upstream commit 996b37da1e0f51314d4186b326742c2a95a9f0dd ]
Filesystems may define their own splice write. Therefore, use the file
fops instead of invoking iter_file_splice_write() directly.
Signed-off-by: Ed Tsai <ed.tsai@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240708072208.25244-1-ed.tsai@xxxxxxxxxxxx
Fixes: 5ca73468612d ("fuse: implement splice read/write passthrough")
Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx>
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/backing-file.c b/fs/backing-file.c
index afb557446c27c..8860dac58c37e 100644
--- a/fs/backing-file.c
+++ b/fs/backing-file.c
@@ -303,13 +303,16 @@ ssize_t backing_file_splice_write(struct pipe_inode_info *pipe,
if (WARN_ON_ONCE(!(out->f_mode & FMODE_BACKING)))
return -EIO;
+ if (!out->f_op->splice_write)
+ return -EINVAL;
+
ret = file_remove_privs(ctx->user_file);
if (ret)
return ret;
old_cred = override_creds(ctx->cred);
file_start_write(out);
- ret = iter_file_splice_write(pipe, out, ppos, len, flags);
+ ret = out->f_op->splice_write(pipe, out, ppos, len, flags);
file_end_write(out);
revert_creds(old_cred);
