On Tue, 22 Jul 2008 23:28:01 +0200 ninjaboy <n0b0dyn1nj4@xxxxxxxxx> wrote: > 2008/7/22 Rik van Riel <riel@xxxxxxxxxxx>: > > On Tue, 22 Jul 2008 13:51:43 -0400 > > Arn <cse.syslab@xxxxxxxxx> wrote: > > > >> So I assume that when a major fault happens, somehow get_user_pages() > >> gets called, is that correct ? > > > > No. When a page fault happens, handle_mm_fault() is called. > > > > The get_user_pages() path is when kernel code tries to access > > the pages of a process that is not the current process. > > > > why kernel tries to access the page of a process that is not the > current process? Think about attaching a debugger to a userspace process and trying to peek or poke the memory of the process. The debugger may try to access memory that is currently swapped out, which will cause the memory to get swapped in. -- All rights reversed. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
