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drm/i915: fix hibernation since i915 self-reclaim fixes

Since commit 4bdadb9785696439c6e2b3efe34aa76df1149c83 ("drm/i915:
Selectively enable self-reclaim"), we've been passing GFP_MOVABLE to the
i915 page allocator where we weren't before due to some over-eager
removal of the page mapping gfp_flags games the code used to play.

This caused hibernate on Intel hardware to result in a lot of memory
corruptions on resume. See for example

http://bugzilla.kernel.org/show_bug.cgi?id=13811

Reported-by: Evengi Golov (in bugzilla)
Signed-off-by: Dave Airlie <airlied@redhat.com>
Tested-by: M. Vefa Bicakci <bicave@superonline.com>
Cc: stable@kernel.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Linus Torvalds 985b823b 9fbd7f9d

+1 -1
+1 -1
drivers/gpu/drm/i915/i915_gem.c
··· 2239 2239 mapping = inode->i_mapping; 2240 2240 for (i = 0; i < page_count; i++) { 2241 2241 page = read_cache_page_gfp(mapping, i, 2242 - mapping_gfp_mask (mapping) | 2242 + GFP_HIGHUSER | 2243 2243 __GFP_COLD | 2244 2244 gfpmask); 2245 2245 if (IS_ERR(page))