drm/i915/gtt: Allow pagedirectory allocations to fail
As we handle the allocation failure of the page directory and tables by propagating the failure back to userspace, allow it to fail if direct reclaim is unable to satisfy the request (i.e. disable the oomkiller). The premise being that if we are unable to allocate a single page for the pagetable, we will not be able to handle the multitude of pages required for the gfx operation and we should back off to allow the system to recover. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106609 Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.william.auld@gmail.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by:
Matthew Auld <matthew.william.auld@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180522083643.29601-1-chris@chris-wilson.co.uk
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