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However, if the damon_target has a large number of damon_regions, the total size may exceed KMALLOC_MAX_SIZE. This problem can be avoided by using kvmalloc instead of kmalloc. Signed-off-by: Akinobu Mita --- mm/damon/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/damon/core.c b/mm/damon/core.c index 265d51ade25b..08e5ce53a7b8 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1358,14 +1358,14 @@ static int damon_commit_target_regions(struct damon_target *dst, if (!i) return 0; - ranges = kmalloc_objs(*ranges, i, GFP_KERNEL | __GFP_NOWARN); + ranges = kvmalloc_objs(*ranges, i, GFP_KERNEL | __GFP_NOWARN); if (!ranges) return -ENOMEM; i = 0; damon_for_each_region(src_region, src) ranges[i++] = src_region->ar; err = damon_set_regions(dst, ranges, i, src_min_region_sz); - kfree(ranges); + kvfree(ranges); return err; } -- 2.43.0