* SHM_LOCK question
@ 2002-02-25 21:36 Badari Pulavarty
2002-02-26 13:46 ` Christoph Rohland
0 siblings, 1 reply; 2+ messages in thread
From: Badari Pulavarty @ 2002-02-25 21:36 UTC (permalink / raw)
To: linux-kernel; +Cc: pbadari
Hi,
I am trying to understand how SHM_LOCK works on 2.4.17.
All I can see SHM_LOCKED set in shm_flags. I don't see how
it is locking the pages (that are already existing or future
pages). Can somebody explain ?
Any help is appreciated.
Thanks,
Badari
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: SHM_LOCK question
2002-02-25 21:36 SHM_LOCK question Badari Pulavarty
@ 2002-02-26 13:46 ` Christoph Rohland
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Rohland @ 2002-02-26 13:46 UTC (permalink / raw)
To: Badari Pulavarty; +Cc: linux-kernel
Hi Badari,
On Mon, 25 Feb 2002, Badari Pulavarty wrote:
> I am trying to understand how SHM_LOCK works on 2.4.17.
> All I can see SHM_LOCKED set in shm_flags. I don't see how
> it is locking the pages (that are already existing or future
> pages). Can somebody explain ?
This flag prevents that the pages are written to swap. shmem_writepage
honors it. SHM_LOCK does _not_ force actually swapped out pages into
memory though.
Greetings
Christoph
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-02-25 21:36 SHM_LOCK question Badari Pulavarty
2002-02-26 13:46 ` Christoph Rohland
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