Re: [Libguestfs] [PATCH nbdkit 5/9] cache: Allow this filter to serve requests in parallel.

Make the implicit lock explicit, and hold it around blk_* operations. This allows us to relax the thread model for the filter to NBDKIT_THREAD_MODEL_PARALLEL. --- filters/cache/blk.h | 7 ++++++ filters/cache/cache.c | 57 +++++++++++++++++++++++++++++++------------ 2 files changed, 49 insertions(+), 15 deletions(-)