On Tue, 2005-03-01 at 05:19 -0800, arvind k wrote: > Hi All, > > I understand that PG_locked flag is set in page->flags > before initiating I/O on a page to avoid parallel > I/Os. But I am wondering how we avoid other processes > and threads from accessing the same page in userspace > if it is mapped(MAP_SHARED) to the address space of > multiple processes. we don't... and that's ok what will happen is that the writes those processes do get written out again later anyway, so there's no data loss involved... -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
