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io_uring: cache nodes and mapped buffers

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Frequent alloc/free cycles on these is pretty costly. Use an io cache to
more efficiently reuse these buffers.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20250227223916.143006-7-kbusch@meta.com
[axboe: fix imu leak]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch
2025-02-27 14:39:16 -08:00
committed by Jens Axboe
parent 1f6540e2aa
commit ed9f3112a8
5 changed files with 65 additions and 16 deletions
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4
io_uring/rsrc.h
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@@ -48,7 +48,9 @@ struct io_imu_folio_data {
unsigned int nr_folios;
};
struct io_rsrc_node *io_rsrc_node_alloc(int type);
bool io_rsrc_cache_init(struct io_ring_ctx *ctx);
void io_rsrc_cache_free(struct io_ring_ctx *ctx);
struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx, int type);
void io_free_rsrc_node(struct io_ring_ctx *ctx, struct io_rsrc_node *node);
void io_rsrc_data_free(struct io_ring_ctx *ctx, struct io_rsrc_data *data);
int io_rsrc_data_alloc(struct io_rsrc_data *data, unsigned nr);