Messages in this thread |  | | Date | Sat, 21 Mar 2009 18:01:40 +0530 | From | Nitin Gupta <> | Subject | Re: [PATCH 3/3] compcache documentation |
| |
Andrew Morton wrote: > On Fri, 20 Mar 2009 19:44:08 +0530 Nitin Gupta <ngupta@vflare.org> wrote: > >> ... >> >> + backing_dev: This is block device to be used as backing store for compcache. >> + It must be a valid swap partition. We move data to this device when we >> + encounter incompressible page or memlimit is reached. TODO: we may also >> + move some pages from compcache to this device in case system is really >> + low on memory. >> + This device is not directly visible to kernel as a swap device >> + (/proc/swaps will only show /dev/ramzswap0 and not this device). >> + Managing this backing device is the job of compcache module. > > hrm, OK, it kinda/sorta/maybe might be a little bit like a "compressed > cache". But if someone comes up with a real compressed cache (ie: > pagecache) then they'll want their name back. > Rename is in progress: compcache->ramzswap :)
> Also, the kernel already has a widespread and well-established "backing > device" concept, in include/linux/backing-dev.h. This new feature's > poaching of that identifier is a bit confusing. It would be nice to do a > wholesale rename if possible. secondary_dev? nv_dev? >
backing_swap?
Thanks, Nitin
|  |