From 78fa51503fdbe463c96eef4c3cf69ca54032647a Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 4 May 2021 18:37:34 -0700 Subject: mm: use proper type for cma_[alloc|release] size_t in cma_alloc is confusing since it makes people think it's byte count, not pages. Change it to unsigned long[1]. The unsigned int in cma_release is also not right so change it. Since we have unsigned long in cma_release, free_contig_range should also respect it. [1] 67a2e213e7e9, mm: cma: fix incorrect type conversion for size during dma allocation Link: https://lore.kernel.org/linux-mm/20210324043434.GP1719932@casper.infradead.org/ Link: https://lkml.kernel.org/r/20210331164018.710560-1-minchan@kernel.org Signed-off-by: Minchan Kim Reviewed-by: David Hildenbrand Cc: Matthew Wilcox Cc: David Hildenbrand Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/cma.c | 17 +++++++++-------- mm/page_alloc.c | 6 +++--- 2 files changed, 12 insertions(+), 11 deletions(-) (limited to 'mm') diff --git a/mm/cma.c b/mm/cma.c index cdad8c4de921..995e15480937 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -79,7 +79,7 @@ static unsigned long cma_bitmap_pages_to_bits(const struct cma *cma, } static void cma_clear_bitmap(struct cma *cma, unsigned long pfn, - unsigned int count) + unsigned long count) { unsigned long bitmap_no, bitmap_count; unsigned long flags; @@ -423,21 +423,21 @@ static inline void cma_debug_show_areas(struct cma *cma) { } * This function allocates part of contiguous memory on specific * contiguous memory area. */ -struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, - bool no_warn) +struct page *cma_alloc(struct cma *cma, unsigned long count, + unsigned int align, bool no_warn) { unsigned long mask, offset; unsigned long pfn = -1; unsigned long start = 0; unsigned long bitmap_maxno, bitmap_no, bitmap_count; - size_t i; + unsigned long i; struct page *page = NULL; int ret = -ENOMEM; if (!cma || !cma->count || !cma->bitmap) goto out; - pr_debug("%s(cma %p, count %zu, align %d)\n", __func__, (void *)cma, + pr_debug("%s(cma %p, count %lu, align %d)\n", __func__, (void *)cma, count, align); if (!count) @@ -505,7 +505,7 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, } if (ret && !no_warn) { - pr_err_ratelimited("%s: %s: alloc failed, req-size: %zu pages, ret: %d\n", + pr_err_ratelimited("%s: %s: alloc failed, req-size: %lu pages, ret: %d\n", __func__, cma->name, count, ret); cma_debug_show_areas(cma); } @@ -534,14 +534,15 @@ out: * It returns false when provided pages do not belong to contiguous area and * true otherwise. */ -bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) +bool cma_release(struct cma *cma, const struct page *pages, + unsigned long count) { unsigned long pfn; if (!cma || !pages) return false; - pr_debug("%s(page %p, count %u)\n", __func__, (void *)pages, count); + pr_debug("%s(page %p, count %lu)\n", __func__, (void *)pages, count); pfn = page_to_pfn(pages); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 80754fc1f1ff..d12299c08b95 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8973,9 +8973,9 @@ struct page *alloc_contig_pages(unsigned long nr_pages, gfp_t gfp_mask, } #endif /* CONFIG_CONTIG_ALLOC */ -void free_contig_range(unsigned long pfn, unsigned int nr_pages) +void free_contig_range(unsigned long pfn, unsigned long nr_pages) { - unsigned int count = 0; + unsigned long count = 0; for (; nr_pages--; pfn++) { struct page *page = pfn_to_page(pfn); @@ -8983,7 +8983,7 @@ void free_contig_range(unsigned long pfn, unsigned int nr_pages) count += page_count(page) != 1; __free_page(page); } - WARN(count != 0, "%d pages are still in use!\n", count); + WARN(count != 0, "%lu pages are still in use!\n", count); } EXPORT_SYMBOL(free_contig_range); -- cgit v1.2.3