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CVS log for src/sys/fs/puffs/puffs_subr.c

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Default branch: MAIN
Current tag: jmcneill-base


Revision 1.57 / (download) - annotate - [select for diffs], Thu Oct 11 19:41:14 2007 UTC (16 years, 5 months ago) by pooka
Branch: MAIN
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, vmlocking-base, jmcneill-base
Branch point for: mjf-devfs, bouyer-xenamd64
Changes since 1.56: +8 -10 lines
Diff to previous 1.56 (colored)

Part 1/n of some pretty extensive changes to how the kernel module
interacts with the userspace file server:

  * since the kernel-user communication is not purely request-response
    anymore (hasn't been since 2006), try to rename some "request" to
    "message".  more similar mangling will take place in the future.

  * completely rework how messages are allocated.  previously most of
    them were borrowed from the stack (originally *all* of them),
    but now always allocate dynamically.  this makes the structure
    of the code much cleaner.  also makes it possible to fix a
    locking order violation.  it enables plenty of future enhancements.

  * start generalizing the transport interface to be independent of puffs

  * move transport interface to read/write instead of ioctl.  the
    old one had legacy design problems, and besides, ioctl's suck.
    implement a very generic version for now; this will be
    worked on later hopefully some day reaching "highly optimized".

  * implement libpuffs support behind existing library request
    interfaces.  this will change eventually (I hate those interfaces)

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