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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-09-24 17:14:48 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-09-24 10:26:11 -0600 |
| commit | 9f3a2cb228c28606895d15f13b30d1f7402dc745 (patch) | |
| tree | 76602f0f4908a3140641ee9836b9b7faa5c731f7 /fs/io_uring.c | |
| parent | cdb31c29d397a8076d81fd1458d091c647ef94ba (diff) | |
| download | linux-9f3a2cb228c28606895d15f13b30d1f7402dc745.tar.gz | |
io_uring: kill extra checks in io_write()
We don't retry short writes and so we would never get to async setup in
io_write() in that case. Thus ret2 > 0 is always false and
iov_iter_advance() is never used. Apparently, the same is found by
Coverity, which complains on the code.
Fixes: cd65869512ab ("io_uring: use iov_iter state save/restore helpers")
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/5b33e61034748ef1022766efc0fb8854cfcf749c.1632500058.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index c6139ace11fa..2b3232d53e79 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3605,7 +3605,6 @@ static int io_write(struct io_kiocb *req, unsigned int issue_flags) iov_iter_save_state(iter, state); } req->result = iov_iter_count(iter); - ret2 = 0; /* Ensure we clear previously set non-block flag */ if (!force_nonblock) @@ -3670,8 +3669,6 @@ done: } else { copy_iov: iov_iter_restore(iter, state); - if (ret2 > 0) - iov_iter_advance(iter, ret2); ret = io_setup_async_rw(req, iovec, inline_vecs, iter, false); return ret ?: -EAGAIN; } |