Re: MAP_NORESERVE with MAP_SHARED

Alan Cox (alan@lxorguk.ukuu.org.uk)
12 Jul 2002 23:15:02 +0100

On Fri, 2002-07-12 at 21:39, David Mosberger wrote:
> Is there a good reason why the MAP_NORESERVE flag is ignored when
> MAP_SHARED is specified? (Hint: it's the call to vm_enough_memory()
> in shmem_file_setup() that's causing MAP_NORESERVE to be ignored.)

In no overcommit mode MAP_NORESERVE is never honoured. In conventional
overcommit mode I may have broken something between base and -ac. Which
bit of the code are you looking at ?

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