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mm: use proper type for cma_[alloc|release]

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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] 67a2e213e7, 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 <minchan@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Minchan Kim 2021-05-04 18:37:34 -07:00 • committed by Linus Torvalds
parent 3aab8ae7aa
commit 78fa51503f
5 changed files with 26 additions and 25 deletions
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4
include/linux/cma.h
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@ -44,9 +44,9 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
const char *name,
struct cma **res_cma);
extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
extern struct page *cma_alloc(struct cma *cma, unsigned long count, unsigned int align,
bool no_warn);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned long count);
extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);
#endif