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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-08-11 14:53:46 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-08-11 18:42:57 +0200 |
| commit | 19a63c4021702e389a559726b16fcbf07a8a05f9 (patch) | |
| tree | 6b7b8db21dfeba497e12914afec8d01cdbd28020 /io_uring/uring_cmd.c | |
| parent | io_uring: never overflow io_aux_cqe (diff) | |
| download | linux-19a63c4021702e389a559726b16fcbf07a8a05f9.tar.xz linux-19a63c4021702e389a559726b16fcbf07a8a05f9.zip | |
io_uring/rsrc: keep one global dummy_ubuf
We set empty registered buffers to dummy_ubuf as an optimisation.
Currently, we allocate the dummy entry for each ring, whenever we can
simply have one global instance.
We're casting out const on assignment, it's fine as we're not going to
change the content of the dummy, the constness gives us an extra layer
of protection if sth ever goes wrong.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e4a96dda35ab755914bc43f6781bba0df97ac489.1691757663.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/uring_cmd.c')
0 files changed, 0 insertions, 0 deletions