io_uring: don't miscount pinned memory

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io_sqe_buffer_unregister() uses cxt->sqo_mm for memory accounting, but
io_ring_ctx_free() drops ->sqo_mm before leaving pinned_vm
over-accounted. Postpone mm cleanup for when it's not needed anymore.

Fixes: 309758254e ("io_uring: report pinned memory usage")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2020-07-18 11:31:20 +03:00 • committed by Jens Axboe

parent 7fbb1b541f

commit 5dbcad51f7

1 changed files with 1 additions and 1 deletions

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fs/io_uring.c

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