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io_uring/zcrx: fix pp destruction warnings 

With multiple page pools and in some other cases we can have allocated
niovs on page pool destruction. Remove a misplaced warning checking that
all niovs are returned to zcrx on io_pp_zc_destroy(). It was reported
before but apparently got lost.

Reported-by: Pedro Tammela <pctammela@mojatatu.com>
Fixes: 34a3e60821 ("io_uring/zcrx: implement zerocopy receive pp memory provider")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b9e6d919d2964bc48ddbf8eb52fc9f5d118e9bc1.1751878185.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
pull/1293/head
Pavel Begunkov 2025-07-07 09:52:33 +01:00 committed by Jens Axboe
parent 6f11adcc6f
commit 203817de26
1 changed files with 0 additions and 3 deletions
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3
io_uring/zcrx.c
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@ -862,10 +862,7 @@ static int io_pp_zc_init(struct page_pool *pp)
static void io_pp_zc_destroy(struct page_pool *pp)
{
struct io_zcrx_ifq *ifq = io_pp_to_ifq(pp);
struct io_zcrx_area *area = ifq->area;
if (WARN_ON_ONCE(area->free_count != area->nia.num_niovs))
return;
percpu_ref_put(&ifq->ctx->refs);
}