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io_uring: don't clear req->kbuf when buffer selection is done

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It's not needed as the REQ_F_BUFFER_SELECTED flag tracks the state of
whether or not kbuf is valid, so just drop it.

Suggested-by: Dylan Yudaken <dylany@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2022-05-01 12:31:56 -06:00
parent 1dbd023eb0
commit 7ccba24d3b
1 changed files with 0 additions and 2 deletions
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2
fs/io_uring.c
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@ -1463,7 +1463,6 @@ static unsigned int __io_put_kbuf(struct io_kiocb *req, struct list_head *list)
{
req->flags &= ~REQ_F_BUFFER_SELECTED;
list_add(&req->kbuf->list, list);
req->kbuf = NULL;
return IORING_CQE_F_BUFFER | (req->buf_index << IORING_CQE_BUFFER_SHIFT);
}
@ -1540,7 +1539,6 @@ static void io_kbuf_recycle(struct io_kiocb *req, unsigned issue_flags)
list_add(&buf->list, &bl->buf_list);
req->flags &= ~REQ_F_BUFFER_SELECTED;
req->buf_index = buf->bgid;
req->kbuf = NULL;
io_ring_submit_unlock(ctx, issue_flags);
}