drm/i915: Release the mmap offset when purging a buffer
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 24 Feb 2012 21:13:38 +0000 (21:13 +0000)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 23 Mar 2012 10:04:35 +0000 (11:04 +0100)
commita14917eeb2cc160d13f4fddefe5f7f9c80953ce1
treefe2f0143ce8fb145cb22cbece58df348c5f6d095
parent121d527a323f3fde313a8f522060ba859ee405b3
drm/i915: Release the mmap offset when purging a buffer

If we discard a buffer due to memory pressure, also release its alloted
mmap address space. As it may be sometime before userspace wakes up
and notices that it has buffers to purge from its cache, we may waste
valuable address space on unusable objects for a period of time.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47738
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_gem.c