c1a1692e09
Branch: reinoud-bufcleanup
Description: implement and evaluate struct buf usage cleanup strategies.
Ideas currently in mind (preference for b):
a)
1. use of bio_ops per buffer.
2. allow chaining/overloading of functions in bio_ops
and provide some private context.
3. extend the bio_ops with commenly used functionality
like pending action counting, custom context passing,
last minute processing of buffer data, buffer cache
etc.
4. investigate the use of the kcont()
continuation-passing framework for async io
completion notification for bufs
...
b)
1. all sequencing use of B_CALL replaced by
device-threads, if possible generic code around BUFQ
2. possibly use kcont() for async IO finished signalling
3. counter of pending and queued actions requestable
by IOCTL interface?
4. implement `last minute buffer fixup' calls and maybe
even finished I/O calls as vnode operations
...
Status: Active
Start Date: Thu Mar 15 2007
End Date:
Base Tag: reinoud-bufcleanup-base
Maintainer: Reinoud Zandijk <reinoud@NetBSD.org>
Scope: src/sys and src/common
Notes: Used as expiriment sandbox and if successful hopefully one day
to be intergrated.
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| TODO.i18n | ||
| TODO.kqueue | ||
| TODO.nits | ||
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