diff options
Diffstat (limited to 'io_uring/kbuf.c')
| -rw-r--r-- | io_uring/kbuf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index de0129bceaba..1cf5be62bb65 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -266,6 +266,9 @@ static int io_ring_buffers_peek(struct io_kiocb *req, struct buf_sel_arg *arg, if (unlikely(!nr_avail)) return -ENOBUFS; + /* MAX_RW_COUNT is the universal Linux per-call IO maximum */ + arg->max_len = min_t(size_t, arg->max_len, MAX_RW_COUNT); + buf = io_ring_head_to_buf(br, head, bl->mask); if (arg->max_len) { u32 len = READ_ONCE(buf->len); @@ -295,7 +298,7 @@ static int io_ring_buffers_peek(struct io_kiocb *req, struct buf_sel_arg *arg, /* set it to max, if not set, so we can use it unconditionally */ if (!arg->max_len) - arg->max_len = INT_MAX; + arg->max_len = MAX_RW_COUNT; req->buf_index = READ_ONCE(buf->bid); do { |