Messages in this thread Patch in this message | | | From | Jérôme Glisse <> | Subject | [PATCH] mm/hmm: constify hmm_devmem_page_get_drvdata() parameter | Date | Mon, 2 Oct 2017 15:32:54 -0400 |
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From: Ralph Campbell <rcampbell@nvidia.com>
Constify pointer parameter to avoid issue when use from code that only has const struct page pointer to use in the first place.
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Jérôme Glisse <jglisse@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> --- include/linux/hmm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/hmm.h b/include/linux/hmm.h index 96e6997..325017a 100644 --- a/include/linux/hmm.h +++ b/include/linux/hmm.h @@ -471,9 +471,9 @@ static inline void hmm_devmem_page_set_drvdata(struct page *page, * @page: pointer to struct page * Return: driver data value */ -static inline unsigned long hmm_devmem_page_get_drvdata(struct page *page) +static inline unsigned long hmm_devmem_page_get_drvdata(const struct page *page) { - unsigned long *drvdata = (unsigned long *)&page->pgmap; + const unsigned long *drvdata = (const unsigned long *)&page->pgmap; return drvdata[1]; } -- 2.4.11
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