localbuf: Introduce StartLocalBufferIO()
To initiate IO on a shared buffer we have StartBufferIO(). For temporary table
buffers no similar function exists - likely because the code for that
currently is very simple due to the lack of concurrency.
However, the upcoming AIO support will make it possible to re-encounter a
local buffer, while the buffer already is the target of IO. In that case we
need to wait for already in-progress IO to complete. This commit makes it
easier to add the necessary code, by introducing StartLocalBufferIO().
Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/CAAKRu_b9anbWzEs5AAF9WCvcEVmgz-1AkHSQ-CLLy-p7WHzvFw@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/771ba90298e2b79a94678c96f7960274a7896feb
Modified Files
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src/backend/storage/buffer/bufmgr.c | 8 ++------
src/backend/storage/buffer/localbuf.c | 36 +++++++++++++++++++++++++++++++++++
src/include/storage/buf_internals.h | 1 +
3 files changed, 39 insertions(+), 6 deletions(-)
