Hi :) On Mon, Feb 14, 2011 at 17:59, piyush moghe <pmkernel@xxxxxxxxx> wrote: > While going through Page Cache explanation in "Professional Linux Kernel" > book I came across one term called "address space" ( not related to virtual > or physical address space ) > I did not get what is the meaning of this address space I'll try to help (although I am not really into filesystem and block device things): think of it like "in which 'device'....or to be precise, a partition or anything 'alike" it belongs". In practice, AFAIK it is used to differentiate whether a page caches something from underlying device...or caching anonymous memory (doesn't have any backing device) (memory) address space --> layout of memory in virtual memory space (the way MMU partitions memory) name space --> in which root filesystem a file or directory (or anything alike) belongs... example: chroot jails pid space --> list of PID that belongs to certain "machine"..it is done to cope with virtual machine...so PID created by them are each belongs to different "space" so by continuing the same "analogy", you could imagine what address space means in this case.... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
