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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] [PATCH 2/2] migration: move bdrv_invalidate_cache_all of of coroutine context |
| Date: | Fri, 12 Feb 2016 13:55:08 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
On 12/02/2016 13:50, Dr. David Alan Gilbert wrote: > I'll admit to not really understanding what the difference is > between bh and coroutine context; I'd thought if it was all > in the main thread stuff was safe. It's arguably a bug in the block layer code. It assumes that all code called from a coroutine wants not to block. Moving stuff to a bottom half tells the block layer that you want bdrv_invalidate_cache_all to block. Paolo
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