Messages in this thread | | | Date | Mon, 20 Mar 2000 16:00:19 -0500 (EST) | From | Chuck Lever <> | Subject | Re: MADV_SPACEAVAIL and MADV_FREE in pre2-3 |
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On Mon, 20 Mar 2000, Richard Henderson wrote: > On Sun, Mar 19, 2000 at 02:38:47PM -0500, Chuck Lever wrote: > > what does MADV_SPACEAVAIL do? > > Snipped from the DU man page: > > > MADV_SPACEAVAIL > Ensure that resources are reserved > > [ENOSPC] The behav parameter specifies MADV_SPACEAVAIL and resources can > not be reserved. > > Not particularly verbose, and I presume it's only a point-check > against overcommit, since another process could come along and > gobble everything up.
perhaps the linux version of madvise should return ENOSPC or zero when invoked with MADV_SPACEAVAIL (at least until it is decided that linux needs a real implementation of MADV_SPACEAVAIL). right now it returns EINVAL.
just a thought.
- Chuck Lever -- corporate: <chuckl@netscape.com> personal: <chucklever@netscape.net> or <cel@monkey.org>
The Linux Scalability project: http://www.citi.umich.edu/projects/linux-scalability/
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