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| author | Ed Tsai <ed.tsai@mediatek.com> | 2024-07-08 15:22:06 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-04 13:30:03 +0200 |
| commit | 0790732a7482764acc183adc2ee7376282dc2c60 (patch) | |
| tree | 787a1502097ab6871540cb7ec3a2fee3e29d20fc | |
| parent | dd65b324174a64558a16ebbf4c3266e5701185d0 (diff) | |
| download | linux-stable-0790732a7482764acc183adc2ee7376282dc2c60.tar.gz linux-stable-0790732a7482764acc183adc2ee7376282dc2c60.tar.bz2 linux-stable-0790732a7482764acc183adc2ee7376282dc2c60.zip | |
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@mediatek.com>
Link: https://lore.kernel.org/r/20240708072208.25244-1-ed.tsai@mediatek.com
Fixes: 5ca73468612d ("fuse: implement splice read/write passthrough")
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/backing-file.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/backing-file.c b/fs/backing-file.c index afb557446c27..8860dac58c37 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); |