On Sun, 16 Dec 2012 17:51:41 +0000, Chris Wilson <chris at chris-wilson.co.uk> wrote: > Avoid clobbering adjacent blocks if they happen to expire earlier and > amalgamate together to form the requested hole. > > In passing this fixes a regression from > commit ea7b1dd44867e9cd6bac67e7c9fc3f128b5b255c > Author: Daniel Vetter <daniel.vetter at ffwll.ch> > Date: Fri Feb 18 17:59:12 2011 +0100 > > drm: mm: track free areas implicitly > > which swaps the end address for size (with a potential overflow) and > effectively causes the eviction code to clobber almost all earlier > buffers above the evictee. > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> > Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
On IRC I mentioned that I feared there be dragon lurking here. They turned out to be figments of my own code - a later patch to adjust the allocation of nodes was incomplete. Please review and consider this patch. -Chris -- Chris Wilson, Intel Open Source Technology Centre
