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| author | Jens Axboe <axboe@kernel.dk> | 2022-07-07 23:20:54 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-25 03:39:17 +0300 |
| commit | 9731bc9855dc169f27433fef3c4d0ff3496c512d (patch) | |
| tree | b28facb6c0ee4796e2787a5c736231a73520993f /include | |
| parent | 9b797a37c4bd83b03cedcfbd15852b836f5e562c (diff) | |
| download | linux-9731bc9855dc169f27433fef3c4d0ff3496c512d.tar.xz | |
io_uring: impose max limit on apoll cache
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/io_uring_types.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h index b548da03b563..bf8f95332eda 100644 --- a/include/linux/io_uring_types.h +++ b/include/linux/io_uring_types.h @@ -160,6 +160,7 @@ struct io_ev_fd { struct io_alloc_cache { struct hlist_head list; + unsigned int nr_cached; }; struct io_ring_ctx { |