[PATCH 5.10 456/717] hugetlb: fix an error code in hugetlb_reserve_pages()

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpen...@oracle.com>

[ Upstream commit 7fc2513aa237e2ce239ab54d7b04d1d79b317110 ]

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.carpen...@oracle.com>
Reviewed-by: Mike Kravetz <mike.krav...@oracle.com>
Reviewed-by: David Hildenbrand <da...@redhat.com>
Cc: Mina Almasry <almasrym...@google.com>
Cc: David Rientjes <rient...@google.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 mm/hugetlb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index d029d938d26d6..3b38ea958e954 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5115,6 +5115,7 @@ int hugetlb_reserve_pages(struct inode *inode,
 
                if (unlikely(add < 0)) {
                        hugetlb_acct_memory(h, -gbl_reserve);
+                       ret = add;
                        goto out_put_pages;
                } else if (unlikely(chg > add)) {
                        /*
-- 
2.27.0