linux-kernel - [PATCH] IB/core: Fix build failure without hugepages

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Message-Id: <20200109084740.2872079-1-arnd@arndb.de>
Date:   Thu,  9 Jan 2020 09:47:30 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Doug Ledford <dledford@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        Yishai Hadas <yishaih@...lanox.com>,
        Artemy Kovalyov <artemyko@...lanox.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Leon Romanovsky <leonro@...lanox.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Moni Shoua <monis@...lanox.com>,
        John Hubbard <jhubbard@...dia.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] IB/core: Fix build failure without hugepages

HPAGE_SHIFT is only defined on architectures that support hugepages:

drivers/infiniband/core/umem_odp.c: In function 'ib_umem_odp_get':
drivers/infiniband/core/umem_odp.c:245:26: error: 'HPAGE_SHIFT' undeclared (first use in this function); did you mean 'PAGE_SHIFT'?

Enclose this in an #ifdef.

Fixes: 9ff1b6466a29 ("IB/core: Fix ODP with IB_ACCESS_HUGETLB handling")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/infiniband/core/umem_odp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index f42fa31c24a2..b9baf7d0a5cb 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/drivers/infiniband/core/umem_odp.c
@@ -241,10 +241,11 @@ struct ib_umem_odp *ib_umem_odp_get(struct ib_udata *udata, unsigned long addr,
 	umem_odp->umem.owning_mm = mm = current->mm;
 	umem_odp->notifier.ops = ops;
 
+	umem_odp->page_shift = PAGE_SHIFT;
+#ifdef CONFIG_HUGETLB_PAGE
 	if (access & IB_ACCESS_HUGETLB)
 		umem_odp->page_shift = HPAGE_SHIFT;
-	else
-		umem_odp->page_shift = PAGE_SHIFT;
+#endif
 
 	umem_odp->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
 	ret = ib_init_umem_odp(umem_odp, ops);
-- 
2.20.0