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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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io_uring/filetable.c
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@@ -68,7 +68,7 @@ static int io_install_fixed_file(struct io_ring_ctx *ctx, struct file *file,
if (slot_index >= ctx->file_table.data.nr)
return -EINVAL;
node = io_rsrc_node_alloc(IORING_RSRC_FILE);
node = io_rsrc_node_alloc(ctx, IORING_RSRC_FILE);
if (!node)
return -ENOMEM;