When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_page_alloc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index c82d94cbbabc..60401350a01a 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -921,6 +921,14 @@ static int ttm_get_pages(struct page **pages, unsigned npages, int flags,
return -ENOMEM;
}
+ /* Swap the pages if we detect consecutive order */
+ if (i && pages[i - 1] == p - 1) {
+ struct page *tmp = p;
+
+ p = pages[i - 1];
+ pages[i - 1] = tmp;
+ }
+
pages[i++] = p;
--npages;
}
--
2.11.0
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