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Subject[PATCH 2/5] mm/sparse: free section usage memory in case populate_section_memmap failed
Date
Free section usage memory in case populate_section_memmap failed.
We use map_count to track the remain unused memory to be freed.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
mm/sparse.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/mm/sparse.c b/mm/sparse.c
index 7ac481353b6b..98bfacc763da 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -549,12 +549,14 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
__func__, nid);
pnum_begin = pnum;
sparse_buffer_fini();
+ memblock_free_early(__pa(usage), map_count * mem_section_usage_size());
goto failed;
}
check_usemap_section_nr(nid, usage);
sparse_init_one_section(__nr_to_section(pnum), pnum, map, usage,
SECTION_IS_EARLY);
usage = (void *) usage + mem_section_usage_size();
+ map_count--;
}
sparse_buffer_fini();
return;
--
2.25.1
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