io_uring/zcrx: keep array of areas

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Currently, we have only a one area per zcrx instance, and struct
io_zcrx_ifq stores a single pointer. To prepare for adding more areas,
replace it with an array of areas.

We'll be creating them at runtime, and the array is protected by 3
locks: ->pp_lock, ->alloc_lock and ->rq.lock. It takes all of them when
switching arrays, and readers should hold either of them.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/d186adfa0ea26f651804cffef77d477f257eb404.1786108672.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2026-08-07 14:19:32 +01:00 • committed by Jens Axboe

parent 7d5d94fe9a

commit ef0f0e10ee

2 changed files with 87 additions and 30 deletions

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112

io_uring/zcrx.c

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5

io_uring/zcrx.h

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