pgsql-server/src include/storage/buf_internals ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    04/04/21 15:06:30

Modified files:
    src/include/storage: buf_internals.h bufmgr.h
    src/backend/storage/buffer: buf_init.c bufmgr.c freelist.c
                                localbuf.c

Log message:
    Another round of code cleanup on bufmgr.  Use BM_VALID flag to keep track
    of whether we have successfully read data into a buffer; this makes the
    error behavior a bit more transparent (IMHO anyway), and also makes it
    work correctly for local buffers which don't use Start/TerminateBufferIO.
    Collapse three separate functions for writing a shared buffer into one.
    This overlaps a bit with cleanups that Neil proposed awhile back, but
    seems not to have committed yet.