Messages in this thread | | | Date | Thu, 2 Dec 1999 13:00:21 -0700 (MST) | From | Jason Gunthorpe <> | Subject | Re: using mmap in creating a new 1GB file |
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On Thu, 2 Dec 1999, James Manning wrote:
> munmap/close time.... one of his ideas included explicitly unmapping > each page once the app done writing to it (100% sequential writes), > although something that could generate this behavior implicitly > would be fantastic.
POSIX has specified the msync syscall to do this. If you call it after each page you write with the MS_ASYNC flag it should schedual an IO for that page and return immediately.
Jason
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