the client and server/shared data initialization into separate functions,
and calling the server/shared initialization directly from main().
Problem noted in PR #1308 (Kenneth Stailey) and PR #1780 (Chris Demetriou).
Fix suggested in PR #1780 by Chris Demetriou, and munged a bit by me,
and OK'd by Frank van der Linden <fvdl@netbsd.org>.
Improve the queuing algorithms used by NFS' asynchronous i/o. The
existing mechanism uses a global queue for some buffers and the
vp->b_dirtyblkhd queue for others. This turns sequential writes into
randomly ordered writes to the server, affecting both read and write
performance. The existing mechanism also copes badly with hung
servers, tending to block accesses to other servers when all the iods
are waiting for a hung server.
The new mechanism uses a queue for each mount point. All asynchronous
i/o goes through this queue which preserves the ordering of requests.
A simple mechanism ensures that the iods are shared out fairly between
active mount points.
Reviewed/integrated/approved by Frank van der Linden <fvdl@netbsd.org>
Lets users over-ride with makeoptions COPTS="..." in kernel config files.
Leave `mandatory' flags (like -msoft-float which on m68k enforces no
FP in kernel) in CFLAGS.
writing data to the file system, if the "optimal" file system I/O
operation block size is less than TP_BSIZE, leave fssize alone (i.e.
at its default setting of MAXBSIZE). This was causing restore's
stack to be trashed, because the end-of-buffer checking/flushing code
around line 680 would never notice that the buffer was full (because
it'd be comparing a buffer segment index, which would always be >= 1, to
fssize / TP_BSIZE, which could be zero in that case), and would keep
filling and filling and filling...
drisavar.h pretends to provide a few bus.h macros, hardwired to
that chip.
This should eventually be replaced by attachment code for the normal
com.c driver, once that one is split up into chip core driver and
attachment code, and once we have busxxx macros in NetBSD/Amiga.
thorpej