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io_uring: remove duplicated calls to io_kiocb_ppos

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commit af9c45eceb upstream.

io_kiocb_ppos is called in both branches, and it seems that the compiler
does not fuse this. Fusing removes a few bytes from loop_rw_iter.

Before:
$ nm -S fs/io_uring.o | grep loop_rw_iter
0000000000002430 0000000000000124 t loop_rw_iter

After:
$ nm -S fs/io_uring.o | grep loop_rw_iter
0000000000002430 000000000000010d t loop_rw_iter

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dylan Yudaken 2022-02-22 02:55:01 -08:00 • committed by Justin Hammond
parent c5d4437385
commit 57e5067f43
1 changed files with 5 additions and 2 deletions
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7
io_uring/io_uring.c
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@ -3303,6 +3303,7 @@ static ssize_t loop_rw_iter(int rw, struct io_kiocb *req, struct iov_iter *iter)
struct kiocb *kiocb = &req->rw.kiocb;
struct file *file = req->file;
ssize_t ret = 0;
loff_t *ppos;
/*
* Don't support polled IO through this interface, and we can't
@ -3314,6 +3315,8 @@ static ssize_t loop_rw_iter(int rw, struct io_kiocb *req, struct iov_iter *iter)
if (kiocb->ki_flags & IOCB_NOWAIT)
return -EAGAIN;
ppos = io_kiocb_ppos(kiocb);
while (iov_iter_count(iter)) {
struct iovec iovec;
ssize_t nr;
@ -3327,10 +3330,10 @@ static ssize_t loop_rw_iter(int rw, struct io_kiocb *req, struct iov_iter *iter)
if (rw == READ) {
nr = file->f_op->read(file, iovec.iov_base,
iovec.iov_len, io_kiocb_ppos(kiocb));
iovec.iov_len, ppos);
} else {
nr = file->f_op->write(file, iovec.iov_base,
iovec.iov_len, io_kiocb_ppos(kiocb));
iovec.iov_len, ppos);
}
if (nr < 0) {