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[PATCH v2 0/7] block/nvme: support nested aio_poll()
From: |
Stefan Hajnoczi |
Subject: |
[PATCH v2 0/7] block/nvme: support nested aio_poll() |
Date: |
Wed, 17 Jun 2020 14:21:54 +0100 |
v2:
* Reword comment in Patch 1 explainin why its safe not to hold q->lock [Sergio]
* Fix s/unwiedly/unwieldy/ typo in the Patch 6 commit description [Philippe]
This series allows aio_poll() to work from I/O request completion callbacks.
QEMU block drivers are supposed to support this because some code paths rely on
this behavior.
There was no measurable performance difference with nested aio_poll() support.
This patch series also contains cleanups that I made while examining and
benchmarking the code.
Stefan Hajnoczi (7):
block/nvme: poll queues without q->lock
block/nvme: drop tautologous assertion
block/nvme: don't access CQE after moving cq.head
block/nvme: switch to a NVMeRequest freelist
block/nvme: clarify that free_req_queue is protected by q->lock
block/nvme: keep BDRVNVMeState pointer in NVMeQueuePair
block/nvme: support nested aio_poll()
block/nvme.c | 220 ++++++++++++++++++++++++++++++++-------------
block/trace-events | 2 +-
2 files changed, 160 insertions(+), 62 deletions(-)
--
2.26.2
- [PATCH v2 0/7] block/nvme: support nested aio_poll(),
Stefan Hajnoczi <=
- [PATCH v2 1/7] block/nvme: poll queues without q->lock, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 2/7] block/nvme: drop tautologous assertion, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 3/7] block/nvme: don't access CQE after moving cq.head, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 4/7] block/nvme: switch to a NVMeRequest freelist, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 5/7] block/nvme: clarify that free_req_queue is protected by q->lock, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 6/7] block/nvme: keep BDRVNVMeState pointer in NVMeQueuePair, Stefan Hajnoczi, 2020/06/17
- [PATCH v2 7/7] block/nvme: support nested aio_poll(), Stefan Hajnoczi, 2020/06/17
- Re: [PATCH v2 0/7] block/nvme: support nested aio_poll(), Stefan Hajnoczi, 2020/06/23