linux/io_uring/alloc_cache.h, branch v6.0Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v6.02022-07-25T00:39:17Zio_uring: impose max limit on apoll cache2022-07-25T00:39:17ZJens Axboeaxboe@kernel.dk2022-07-07T20:20:54Zurn:sha1:9731bc9855dc169f27433fef3c4d0ff3496c512d
Caches like this tend to grow to the peak size, and then never get any
smaller. Impose a max limit on the size, to prevent it from growing too
big.
A somewhat randomly chosen 512 is the max size we'll allow the cache
to get. If a batch of frees come in and would bring it over that, we
simply start kfree'ing the surplus.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_uring: add abstraction around apoll cache2022-07-25T00:39:17ZJens Axboeaxboe@kernel.dk2022-07-07T20:16:20Zurn:sha1:9b797a37c4bd83b03cedcfbd15852b836f5e562c
In preparation for adding limits, and one more user, abstract out the
core bits of the allocation+free cache.
Signed-off-by: Jens Axboe <axboe@kernel.dk>