From: Paul Gortmaker <[email protected]>
Date: Thu, 13 Feb 2014 16:15:01 -0500
> While copy_to/from_user_page() users are uncommon, there is one in
> drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c which leads
> to the following:
>
> ERROR: "sparc32_cachetlb_ops"
> [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined!
>
> during routine allmodconfig build coverage. The reason this happens
> is as follows:
>
> In arch/sparc/include/asm/cacheflush_32.h we have:
>
> #define flush_cache_page(vma,addr,pfn) \
> sparc32_cachetlb_ops->cache_page(vma, addr)
>
> #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
> do { \
> flush_cache_page(vma, vaddr, page_to_pfn(page));\
> memcpy(dst, src, len); \
> } while (0)
> #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
> do { \
> flush_cache_page(vma, vaddr, page_to_pfn(page));\
> memcpy(dst, src, len); \
> } while (0)
>
> However, sparc32_cachetlb_ops isn't exported and hence the error.
>
> Signed-off-by: Paul Gortmaker <[email protected]>
Also applied.
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