udmabuf: fix vmap_udmabuf error page set

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Currently vmap_udmabuf set page's array by each folio.
But, ubuf->folios is only contain's the folio's head page.

That mean we repeatedly mapped the folio head page to the vmalloc area.

Due to udmabuf can use hugetlb, if HVO enabled, tail page may not exist,
so, we can't use page array to map, instead, use pfn array.

By this, we removed page usage in udmabuf totally.

Fixes: 5e72b2b41a ("udmabuf: convert udmabuf driver to use folios")
Suggested-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Huan Yang <link@vivo.com>
Acked-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240918025238.2957823-4-link@vivo.com

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Huan Yang 2024-09-18 10:52:26 +08:00 • committed by Vivek Kasireddy

parent 1c0844c618

commit 18d7de823b

2 changed files with 16 additions and 7 deletions

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1

drivers/dma-buf/Kconfig

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22

drivers/dma-buf/udmabuf.c

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