diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2017-04-18 16:18:15 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-04-18 16:18:15 +0100 |
| commit | d1263f8f1805ffe6a9da8520a6aa96062bc794f4 (patch) | |
| tree | c5fa1810e634b8bd725bd2eaafccffb4362c1552 /include/block/block.h | |
| parent | 9c6b899f7a46893ab3b671e341a2234e9c0c060e (diff) | |
| parent | 91af091f92358c2ff828fa1def1a7bea9b701cdf (diff) | |
Merge remote-tracking branch 'remotes/famz/tags/block-pull-request' into staging
# gpg: Signature made Tue 18 Apr 2017 15:58:32 BST
# gpg: using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6
* remotes/famz/tags/block-pull-request:
block: Drain BH in bdrv_drained_begin
block: Walk bs->children carefully in bdrv_drain_recurse
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/include/block/block.h b/include/block/block.h index 97d4330292..5ddc0cf21b 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -381,12 +381,13 @@ void bdrv_drain_all(void); #define BDRV_POLL_WHILE(bs, cond) ({ \ bool waited_ = false; \ + bool busy_ = true; \ BlockDriverState *bs_ = (bs); \ AioContext *ctx_ = bdrv_get_aio_context(bs_); \ if (aio_context_in_iothread(ctx_)) { \ - while ((cond)) { \ - aio_poll(ctx_, true); \ - waited_ = true; \ + while ((cond) || busy_) { \ + busy_ = aio_poll(ctx_, (cond)); \ + waited_ |= !!(cond) | busy_; \ } \ } else { \ assert(qemu_get_current_aio_context() == \ @@ -398,11 +399,16 @@ void bdrv_drain_all(void); */ \ assert(!bs_->wakeup); \ bs_->wakeup = true; \ - while ((cond)) { \ - aio_context_release(ctx_); \ - aio_poll(qemu_get_aio_context(), true); \ - aio_context_acquire(ctx_); \ - waited_ = true; \ + while (busy_) { \ + if ((cond)) { \ + waited_ = busy_ = true; \ + aio_context_release(ctx_); \ + aio_poll(qemu_get_aio_context(), true); \ + aio_context_acquire(ctx_); \ + } else { \ + busy_ = aio_poll(ctx_, false); \ + waited_ |= busy_; \ + } \ } \ bs_->wakeup = false; \ } \ |