From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Wed, 9 Oct 2013 10:18:07 +0000 (-0700)
Subject: drm/ttm: Allow vm fault retries
X-Git-Tag: v3.13-rc1~76^2~16^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cbe12e74ee4e29b6cb4e63fa284e80b73ad57926;p=pandora-kernel.git

drm/ttm: Allow vm fault retries

Make use of the FAULT_FLAG_ALLOW_RETRY flag to allow dropping the
mmap_sem while waiting for bo idle.

FAULT_FLAG_ALLOW_RETRY appears to be primarily designed for disk waits
but should work just as fine for GPU waits..

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
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