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[Qemu-devel] [PATCH v2 0/4] block: fix blk_aio_*() segfault when blk->ro
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH v2 0/4] block: fix blk_aio_*() segfault when blk->root == NULL |
Date: |
Tue, 13 Feb 2018 14:20:58 +0000 |
v2:
* Introduce AIO_WAIT_WHILE() since aio_poll(ctx, true) is not allowed [Paolo]
Using bdrv_inc_in_flight(blk_bs(blk)) doesn't work since BlockBackend->root may
be NULL.
This patch series solves the issue by adding an BlockBackend->in_flight counter
so requests can be tracked even when there is no BlockDriverState.
This should fix the IDE and virtio-blk segfaults that have been encountered
when there is no BlockDriverState.
The patch is based on work by Kevin Wolf.
Kevin Wolf (1):
block: test blk_aio_flush() with blk->root == NULL
Stefan Hajnoczi (3):
block: extract AIO_WAIT_WHILE() from BlockDriverState
block: add BlockBackend->in_flight counter
Revert "IDE: Do not flush empty CDROM drives"
tests/Makefile.include | 2 +
util/Makefile.objs | 2 +-
include/block/aio-wait.h | 116 +++++++++++++++++++++++++++++++++++++++++++++
include/block/block.h | 40 +++-------------
include/block/block_int.h | 7 ++-
block.c | 7 ++-
block/block-backend.c | 60 ++++++++++++++++++++---
block/io.c | 10 +---
hw/ide/core.c | 10 +---
tests/test-block-backend.c | 82 ++++++++++++++++++++++++++++++++
util/aio-wait.c | 40 ++++++++++++++++
11 files changed, 313 insertions(+), 63 deletions(-)
create mode 100644 include/block/aio-wait.h
create mode 100644 tests/test-block-backend.c
create mode 100644 util/aio-wait.c
--
2.14.3
- [Qemu-devel] [PATCH v2 0/4] block: fix blk_aio_*() segfault when blk->root == NULL,
Stefan Hajnoczi <=
- [Qemu-devel] [PATCH v2 2/4] block: add BlockBackend->in_flight counter, Stefan Hajnoczi, 2018/02/13
- [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Stefan Hajnoczi, 2018/02/13
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Eric Blake, 2018/02/13
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Stefan Hajnoczi, 2018/02/14
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Eric Blake, 2018/02/14
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Stefan Hajnoczi, 2018/02/15
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Kevin Wolf, 2018/02/15
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Eric Blake, 2018/02/15
- Re: [Qemu-devel] [PATCH v2 1/4] block: extract AIO_WAIT_WHILE() from BlockDriverState, Eric Blake, 2018/02/14