aio_context_acquire/release are only going away as soon as the block layer becomes thread-safe, but we can already move away to other finer-grained mutex whenever possible.
These three drivers don't use coroutines, hence a QemuMutex is a fine primitive to use for protecting any per-BDS data in the libraries they use. The QemuMutex must protect any fd handlers or bottom halves, and also the BlockDriver callbacks which were implicitly being called under aio_context_acquire. Paolo Paolo Bonzini (3): curl: do not use aio_context_acquire/release nfs: do not use aio_context_acquire/release iscsi: do not use aio_context_acquire/release block/curl.c | 24 ++++++++++------- block/iscsi.c | 83 +++++++++++++++++++++++++++++++++++++++++++++-------------- block/nfs.c | 20 +++++++++++--- 3 files changed, 95 insertions(+), 32 deletions(-) -- 2.9.3
