This patch cleans up some of the bufmgr code:
- replace uses of
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
ReleaseBuffer(buf);
with the equivalent, but more concise:
UnlockAndReleaseBuffer(buf);
- analogous changes were made by replacing LockBuffer() + WriteBuffer()
with UnlockAndWriteBuffer()
- remove a bunch of #ifdef BMTRACE code, since it was ugly and broken
anyway
- remove an unused buffer descriptor bit flag (BM_PRIVATE)
- move the definition of INVALID_DESCRIPTOR to out of bufmgr.h and into
freelist.c, since it is the only file that uses it
- remove another unused function, and fix a few comments
Please apply to the CVS HEAD.
-Neil
