> -----Original Message----- > From: kernelnewbies-bounce@xxxxxxxxxxxx > [mailto:kernelnewbies-bounce@xxxxxxxxxxxx] On Behalf Of cheng long > Sent: Wednesday, May 03, 2006 10:20 AM > To: arjan@xxxxxxxxxxxxx > Cc: kernelnewbies@xxxxxxxxxxxx > Subject: Re: Why can't we use the user-space pointer in kernel mode? > > > > because it may be swapped out to disk ... > > you need a special function that can deal with that (and swaps it > > right back in) > Why can't we use the "page fault handler" like in user space > to swap the page back in? Why can't you just use copy_*_user() functions and let them take care of these details, or am I missing something? > > Thanks, > Cheng > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
