Commit e5e9ecde authored Apr 07, 2009 by Eric Anholt

drm/i915: Correctly set the write flag for get_user_pages in pread.

Otherwise, the results of our read didn't show up when we were faulting in
the page being read into (as happened with a testcase reading into a big
stack area). Likely accounts for some conformance test failures.

Signed-off-by: Eric Anholt <eric@anholt.net>

parent 2bc43b5c

drivers/gpu/drm/i915/i915_gem.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -287,7 +287,7 @@ i915_gem_shmem_pread_slow(struct drm_device dev, struct drm_gem_object obj,

		down_read(&mm->mmap_sem);
		pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr,
		num_pages, 0, 0, user_pages, NULL);
		num_pages, 1, 0, user_pages, NULL);
		up_read(&mm->mmap_sem);
		if (pinned_pages < num_pages) {
		ret = -EFAULT;