diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2020-09-06 00:45:48 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-01 05:32:34 +0300 |
| commit | 4be1c615126963ade321492283c05fb653f55099 (patch) | |
| tree | 04b140e37dde26645d226f9b461ad286b42475e1 /fs/io_uring.c | |
| parent | ab0b196ce5551a093388bb2ceace30df7891051c (diff) | |
| download | linux-4be1c615126963ade321492283c05fb653f55099.tar.xz | |
io_uring: kill extra user_bufs check
Testing ctx->user_bufs for NULL in io_import_fixed() is not neccessary,
because in that case ctx->nr_user_bufs would be zero, and the following
check would fail.
Signed-off-by: Pavel Begunkov <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 | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index ed7032bb76bf..f3d90a6108f8 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2672,18 +2672,12 @@ static ssize_t io_import_fixed(struct io_kiocb *req, int rw, struct io_ring_ctx *ctx = req->ctx; size_t len = req->rw.len; struct io_mapped_ubuf *imu; - u16 index, buf_index; + u16 index, buf_index = req->buf_index; size_t offset; u64 buf_addr; - /* attempt to use fixed buffers without having provided iovecs */ - if (unlikely(!ctx->user_bufs)) - return -EFAULT; - - buf_index = req->buf_index; if (unlikely(buf_index >= ctx->nr_user_bufs)) return -EFAULT; - index = array_index_nospec(buf_index, ctx->nr_user_bufs); imu = &ctx->user_bufs[index]; buf_addr = req->rw.addr; |