Messages in this thread | | | Subject | Re: [PATCH] fix remap of shared read only mappings | From | James Bottomley <> | Date | 04 Sep 2003 20:52:36 -0400 |
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On Thu, 2003-09-04 at 20:49, Daniel Phillips wrote: > This an interesting tidbit, as I'm busy working on a DFS mmap for OpenGFS, and > I want to be sure I'm implementing true-blue Posix semantics. But trawling > through the Posix/SUS specification at: > > http://www.unix-systems.org/version3/online.html > > all it says is that for MAP_SHARED "write references shall change the > underlying object." I don't see anything about when those changes become > visible to other mappers, much less any discussion of local caching. Am I > looking at the wrong document?
Not sure which is "correct", but the one I'm looking at is the POSIX update from the open group:
http://www.opengroup.org/onlinepubs/007904975/functions/mmap.html
And that's where I was quoting from.
James
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