From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Subject: hugetlb: fix an error code in hugetlb_reserve_pages() Preserve the error code from region_add() instead of returning success. Link: https://lkml.kernel.org/r/X9NGZWnZl5/Mt99R@mwanda Fixes: 0db9d74ed884 ("hugetlb: disable region_add file_region coalescing") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Cc: Mina Almasry <almasrymina@xxxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/hugetlb.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/hugetlb.c~hugetlb-fix-an-error-code-in-hugetlb_reserve_pages +++ a/mm/hugetlb.c @@ -5113,6 +5113,7 @@ int hugetlb_reserve_pages(struct inode * if (unlikely(add < 0)) { hugetlb_acct_memory(h, -gbl_reserve); + ret = add; goto out_put_pages; } else if (unlikely(chg > add)) { /* _
