On Mon, 2007-04-02 at 20:58 -0700, Andrew Morton wrote: > On Tue, 03 Apr 2007 13:44:45 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote: > > > > > I can never remember what the function to register to receive VM pressure > > is called. I have to trace down from __alloc_pages() to find it. > > > > It's called "set_shrinker()", and it needs Your Help. > > > > New version: > > 1) Don't hide struct shrinker. It contains no magic. > > 2) Don't allocate "struct shrinker". It's not helpful. > > 3) Call them "register_shrinker" and "unregister_shrinker". > > 4) Call the function "shrink" not "shrinker". > > 5) Rename "nr_to_scan" argument to "nr_to_free". > > No, it is actually the number to scan. This is >= the number of freed > objects. > > This is because, for better of for worse, the VM tries to balance the > scanning rate of the various caches, not the reclaiming rate.
Err, ok, I completely missed that distinction. Does that mean the to function correctly every user needs some internal cursor so it doesn't end up scanning the first N entries over and over? Rusty. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
