The patch titled
Subject: mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
has been added to the -mm tree. Its filename is
mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers.patch
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------------------------------------------------------
From: Jan Stancek <jstancek@xxxxxxxxxx>
Subject: mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
Replace ENOTSUPP with EOPNOTSUPP. If hugepages are not supported, this
value is propagated to userspace. EOPNOTSUPP is part of uapi and is
widely supported by libc libraries.
Signed-off-by: Jan Stancek <jstancek@xxxxxxxxxx>
Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/hugetlb.c~mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers
+++ a/mm/hugetlb.c
@@ -2751,7 +2751,7 @@ static int hugetlb_sysctl_handler_common
int ret;
if (!hugepages_supported())
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
table->data = &tmp;
table->maxlen = sizeof(unsigned long);
@@ -2792,7 +2792,7 @@ int hugetlb_overcommit_handler(struct ct
int ret;
if (!hugepages_supported())
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
tmp = h->nr_overcommit_huge_pages;
_
Patches currently in -mm which might be from jstancek@xxxxxxxxxx are
mm-hugetlb-use-eopnotsupp-in-hugetlb-sysctl-handlers.patch
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