Thread (16 messages) flat view 16 messages, 6 authors, 2009-10-07

Re: [PATCH][RFC] add MAP_UNLOCKED mmap flag

From: KOSAKI Motohiro <hidden>
Date: 2009-10-06 10:11:49
Also in: linux-mm, lkml

Hi
If application does mlockall(MCL_FUTURE) it is no longer possible to
mmap file bigger than main memory or allocate big area of anonymous
memory. Sometimes it is desirable to lock everything related to program
execution into memory, but still be able to mmap big file or allocate
huge amount of memory and allow OS to swap them on demand. MAP_UNLOCKED
allows to do that.

Signed-off-by: Gleb Natapov <redacted>
Why don't you use explicit munlock()?
Plus, Can you please elabrate which workload nedd this feature?



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