Libor Michalek wrote:
The program opens the charcter device file descriptor, pins the pages
and waits for a signal, before checking the pages, which is sent to the
process after running some other program which exercises the VM. On older
kernels the check fails, on my 2.6.11 kernel the check succeeds. So
mlock is not needed on top of get_user_pages() as it was before.
Libor,
When you say "older", what exactly do you mean? I have different test that normally fails
with just get_user_pages(), but it works with 2.6.9 and above. I haven't been able to get
any kernel earlier than 2.6.9 to compile or boot properly, so I'm having a hard time
narrowing down the actual point when get_user_pages() started working.
--
Timur Tabi
Staff Software Engineer
[email protected]
One thing a Southern boy will never say is,
"I don't think duct tape will fix it."
-- Ed Smylie, NASA engineer for Apollo 13
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