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: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -308,9 +308,7 @@ int ttm_tt_swapin(struct ttm_tt *ttm)
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if (unlikely(to_page == NULL))
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goto out_err;
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preempt_disable();
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copy_highpage(to_page, from_page);
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preempt_enable();
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page_cache_release(from_page);
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}
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@ -358,9 +356,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage)
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ret = PTR_ERR(to_page);
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goto out_err;
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}
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preempt_disable();
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copy_highpage(to_page, from_page);
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preempt_enable();
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set_page_dirty(to_page);
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mark_page_accessed(to_page);
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page_cache_release(to_page);
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