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On Thu Jan 28 2010 at 21:55:53 +0000, Mindaugas Rasiukevicius wrote:
> Unless anyone objects, I would like to change struct uvm_object::vmobjlock to
> be dynamically allocated with mutex_obj_alloc(). It allows us to: 1) share
> the lock among objects by holding a reference 2) avoid false-sharing on
> Note that struct vnode::v_interlock becomes a pointer, which means a chunk of
> mechanical changes.
1) can you give an example of where this is useful? (i'm not saying it
isn't, i just don't like thinking ;)
2) really? looks like for example for vnodes the next 64 bytes starting
from the interlock (on i386) require taking the interlock anyway.
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