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Commit 55aa914e authored by Akinobu Mita's avatar Akinobu Mita Committed by Dave Airlie
Browse files

drm/ttm: remove unneeded preempt_disable/enable 



It is unnecessary to disable preemption explicitly while calling
copy_highpage().  Because copy_highpage() will do it again through
kmap_atomic/kunmap_atomic.

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: default avatarThomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent ac207ed2

drivers/gpu/drm/ttm/ttm_tt.c

+0 −4
Original line number Diff line number Diff line
@@ -308,9 +308,7 @@ int ttm_tt_swapin(struct ttm_tt *ttm) 
		if (unlikely(to_page == NULL))

			goto out_err;



		preempt_disable();

		copy_highpage(to_page, from_page);

		preempt_enable();

		page_cache_release(from_page);

	}
@@ -358,9 +356,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage) 
			ret = PTR_ERR(to_page);

			goto out_err;

		}

		preempt_disable();

		copy_highpage(to_page, from_page);

		preempt_enable();

		set_page_dirty(to_page);

		mark_page_accessed(to_page);

		page_cache_release(to_page);