linux-kernel - [PATCH v2 5/6] tile: mm: Use hugetlb_bad

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Date:	Wed, 23 Mar 2016 18:07:07 +0530
From:	Vaishali Thakkar <vaishali.thakkar@...cle.com>
To:	akpm@...ux-foundation.org
Cc:	cmetcalf@...hip.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Vaishali Thakkar <vaishali.thakkar@...cle.com>,
	Hillf Danton <hillf.zj@...baba-inc.com>,
	Michal Hocko <mhocko@...e.com>,
	Yaowei Bai <baiyaowei@...s.chinamobile.com>,
	Dominik Dingel <dingel@...ux.vnet.ibm.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Subject: [PATCH v2 5/6] tile: mm: Use hugetlb_bad_size

Update the setup_hugepagesz function to call the routine
hugetlb_bad_size when unsupported hugepage size is found.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@...cle.com>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc: Hillf Danton <hillf.zj@...baba-inc.com>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Yaowei Bai <baiyaowei@...s.chinamobile.com>
Cc: Dominik Dingel <dingel@...ux.vnet.ibm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
---
- Please note that the patch is tested for x86 only. But as this
  is one line change I just changed them. So, it would be good if
  the patch can be tested for other architectures before adding
  this in to mainline.
Changes since v1:
        - Separate different arch specific changes in different
          patches instead of one
---
 arch/tile/mm/hugetlbpage.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
index e212c64..77ceaa3 100644
--- a/arch/tile/mm/hugetlbpage.c
+++ b/arch/tile/mm/hugetlbpage.c
@@ -308,11 +308,16 @@ static bool saw_hugepagesz;
 
 static __init int setup_hugepagesz(char *opt)
 {
+	int rc;
+
 	if (!saw_hugepagesz) {
 		saw_hugepagesz = true;
 		memset(huge_shift, 0, sizeof(huge_shift));
 	}
-	return __setup_hugepagesz(memparse(opt, NULL));
+	rc = __setup_hugepagesz(memparse(opt, NULL));
+	if (rc)
+		hugetlb_bad_size();
+	return rc;
 }
 __setup("hugepagesz=", setup_hugepagesz);
 
-- 
2.1.4