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| author | Linus Walleij <linusw@kernel.org> | 2026-03-10 11:53:11 +0300 |
|---|---|---|
| committer | Linus Walleij <linusw@kernel.org> | 2026-03-11 12:06:13 +0300 |
| commit | e669d2f601919aedc6cadca673109684aa499326 (patch) | |
| tree | c9fa820c6905450e67dc96a5162c4981a5d85362 | |
| parent | dfda8e9a282d3affbd64df3483e1bb8a5e0b015d (diff) | |
| download | linux-e669d2f601919aedc6cadca673109684aa499326.tar.xz | |
dma-buf: heaps: Clear CMA pages with clear_pages()
As of commit 62a9f5a85b98
"mm: introduce clear_pages() and clear_user_pages()" we can
clear a range of pages with a potentially assembly-optimized
call.
Instead of using a memset, use this helper to clear the whole
range of pages from the CMA allocation.
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260310-cma-heap-clear-pages-v2-1-ecbbed3d7e6d@kernel.org
| -rw-r--r-- | drivers/dma-buf/heaps/cma_heap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c index bd3370b9a3f6..f0bacf25ed9d 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -343,7 +343,7 @@ static struct dma_buf *cma_heap_allocate(struct dma_heap *heap, nr_clear_pages--; } } else { - memset(page_address(cma_pages), 0, size); + clear_pages(page_address(cma_pages), pagecount); } buffer->pages = kmalloc_objs(*buffer->pages, pagecount); |