Re: Memory managment locks

Arnaldo Carvalho de Melo
2001-09-16T01:51:05Z

Em Mon, Sep 10, 2001 at 03:12:29PM +0200, Martin Maletinsky escreveu:

> I am writing a kernel thread, that should check if a process' page
> (specified by a virtual address and the pointer to a task structure) is
> present in physical memory, and if this is the case pin it in memory
> (i.e. prevent it from being swapped out). I plan to pin the page by
> incrementing it's usage count (i.e. the count field of the corresponding
> page descriptor) - this is the way map_user_kiobuf() pins pages in
> memory. I have some questions about semaphores and spinlocks to be used,
> when accessing a process' mm structure and page tables:

have you looked at the linux-mm wiki at http://linux-mm.org/wiki, specially
this part: http://linux-mm.org/wiki/moin.cgi/MemoryLocking ?

hope this helps,

- Arnaldo
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