Provide ReadRecentBuffer() to re-pin buffers by ID. If you know the ID of a buffer that recently held a block that you would like to pin, this function can be used check if it's still there. It can be used to avoid a second lookup in the buffer mapping table after PrefetchBuffer() reports a cache hit.
Reviewed-by: Andres Freund <[email protected]> Discussion: https://postgr.es/m/CA+hUKGJ4VJN8ttxScUFM8dOKX0BrBiboo5uz1cq=aovoddf...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/2f27f8c511494cca9e0e9a4eeeb102fa9f193002 Modified Files -------------- src/backend/storage/buffer/bufmgr.c | 78 +++++++++++++++++++++++++++++++++++++ src/include/storage/bufmgr.h | 2 + 2 files changed, 80 insertions(+)
