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io_uring/kbuf: account ring io_buffer_list memory

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Follow the non-ringed pbuf struct io_buffer_list allocations and account
it against the memcg. There is low chance of that being an actual
problem as ring provided buffer should either pin user memory or
allocate it, which is already accounted.

Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/3985218b50d341273cafff7234e1a7e6d0db9808.1747150490.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2025-05-13 18:26:46 +01:00 committed by Jens Axboe
parent 8fb7aee055
commit 475a8d3037
1 changed files with 1 additions and 1 deletions
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2
io_uring/kbuf.c
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@ -621,7 +621,7 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
io_destroy_bl(ctx, bl);
}
free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL);
free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL_ACCOUNT);
if (!bl)
return -ENOMEM;