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authorMinchan Kim <minchan@kernel.org>2021-05-04 18:37:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-05 11:27:24 -0700
commit78fa51503fdbe463c96eef4c3cf69ca54032647a (patch)
treed5159574ddf321d8d86d47b01d41c6f6fe93e68b /mm
parent3aab8ae7aace3388da319a233edf48f0f5d26a44 (diff)
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 <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>
Diffstat (limited to 'mm')
-rw-r--r--mm/cma.c17
-rw-r--r--mm/page_alloc.c6
2 files changed, 12 insertions, 11 deletions
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);