Hello,
On 2014-09-09 08:13, Wang, Yalin wrote:
This patch add memblock_free to also free the reserved memblock,
so that the cma pages are not marked as reserved memory in
/sys/kernel/debug/memblock/reserved debug file
Signed-off-by: Yalin Wang <yalin.wang@xxxxxxxxxxxxxx>
Acked-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
mm/cma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/cma.c b/mm/cma.c
index c17751c..f3ec756 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -114,6 +114,8 @@ static int __init cma_activate_area(struct cma *cma)
goto err;
}
init_cma_reserved_pageblock(pfn_to_page(base_pfn));
+ memblock_free(__pfn_to_phys(base_pfn),
+ pageblock_nr_pages * PAGE_SIZE);
} while (--i);
mutex_init(&cma->lock);
Right. Thanks for fixing this issue. When cma_activate_area() is called
noone
should use memblock to allocate memory, but it is ok to call memblock_free()
to update memblock statistics, so users won't be confused by cma entries in
/sys/kernel/debug/memblock/reserved file.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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