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Re: Idea for reducing disk IO on tagging operations

From: Paul Sander
Subject: Re: Idea for reducing disk IO on tagging operations
Date: Tue, 22 Mar 2005 19:35:45 -0800

Actually, this quote was mis-attributed...

The CVS manual online at has a pretty good description of
how CVS directory level locking works.

--- Forwarded mail from address@hidden

> Paul Sander <address@hidden> writes:
> Actually, if you look closely, I believe that CVS will not do read-only
> RCS operations if a CVS write-lock exists for the directory. Of course,
> ViewCVS and CVSweb do it all the time as do many of the other add-ons.

I'm getting more worried about this one for 2 seperate reasons:
  1) There is talk of cvs -n for diff and the like which seems to
  suggest it ignores locks.
  2) I could do with a better under standing of the directory locks;
  pointers? I've read the top of lock.c but it still doesn't tell me
  enough; for example there seem to be multiple lock files used - but
  then surely the creation of them isn't atomic? Or is there one lock
  file used for both reading and writing?

--- End of forwarded message from address@hidden

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