crosvm/io_uring
Dylan Reid 03164ca9d8 io_uring: allocate iovecs based on returned count from the kernel
The kernel is allowed to not only limit the number of requested entries,
but also provide more than is requested. If a non-power-of-2 is
requested, it will be rounded up to the next power of 2.

Ensure that there are enough iovecs by allocating them based on the
number returned from io_uring_setup instead of the number of entries
requested.

TEST=cargo test read_parallel

Change-Id: If92e0a31858d1af53b99af8415002a4f26b48230
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2140915
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Dylan Reid <dgreid@chromium.org>
2020-04-10 00:13:08 +00:00
..
src io_uring: allocate iovecs based on returned count from the kernel 2020-04-10 00:13:08 +00:00
Cargo.toml Add io_uring interfaces 2020-04-05 21:32:20 +00:00