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Message-Id: <20200415113445.11881-70-sashal@kernel.org>
Date: Wed, 15 Apr 2020 07:33:45 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Christophe Leroy <christophe.leroy@....fr>,
kbuild test robot <lkp@...el.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Mike Kravetz <mike.kravetz@...cle.com>,
Baoquan He <bhe@...hat.com>,
Nishanth Aravamudan <nacc@...ibm.com>,
Nick Piggin <npiggin@...e.de>, Adam Litke <agl@...ibm.com>,
Andi Kleen <ak@...e.de>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Sasha Levin <sashal@...nel.org>, linux-mm@...ck.org
Subject: [PATCH AUTOSEL 5.6 070/129] mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS
From: Christophe Leroy <christophe.leroy@....fr>
[ Upstream commit bb297bb2de517e41199185021f043bbc5d75b377 ]
When CONFIG_HUGETLB_PAGE is set but not CONFIG_HUGETLBFS, the following
build failure is encoutered:
In file included from arch/powerpc/mm/fault.c:33:0:
include/linux/hugetlb.h: In function 'hstate_inode':
include/linux/hugetlb.h:477:9: error: implicit declaration of function 'HUGETLBFS_SB' [-Werror=implicit-function-declaration]
return HUGETLBFS_SB(i->i_sb)->hstate;
^
include/linux/hugetlb.h:477:30: error: invalid type argument of '->' (have 'int')
return HUGETLBFS_SB(i->i_sb)->hstate;
^
Gate hstate_inode() with CONFIG_HUGETLBFS instead of CONFIG_HUGETLB_PAGE.
Fixes: a137e1cc6d6e ("hugetlbfs: per mount huge page sizes")
Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
Cc: Baoquan He <bhe@...hat.com>
Cc: Nishanth Aravamudan <nacc@...ibm.com>
Cc: Nick Piggin <npiggin@...e.de>
Cc: Adam Litke <agl@...ibm.com>
Cc: Andi Kleen <ak@...e.de>
Link: http://lkml.kernel.org/r/7e8c3a3c9a587b9cd8a2f146df32a421b961f3a2.1584432148.git.christophe.leroy@c-s.fr
Link: https://patchwork.ozlabs.org/patch/1255548/#2386036
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
include/linux/hugetlb.h | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 1e897e4168ac1..dafb3d70ff819 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -390,7 +390,10 @@ static inline bool is_file_hugepages(struct file *file)
return is_file_shm_hugepages(file);
}
-
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+ return HUGETLBFS_SB(i->i_sb)->hstate;
+}
#else /* !CONFIG_HUGETLBFS */
#define is_file_hugepages(file) false
@@ -402,6 +405,10 @@ hugetlb_file_setup(const char *name, size_t size, vm_flags_t acctflag,
return ERR_PTR(-ENOSYS);
}
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+ return NULL;
+}
#endif /* !CONFIG_HUGETLBFS */
#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
@@ -472,11 +479,6 @@ extern unsigned int default_hstate_idx;
#define default_hstate (hstates[default_hstate_idx])
-static inline struct hstate *hstate_inode(struct inode *i)
-{
- return HUGETLBFS_SB(i->i_sb)->hstate;
-}
-
static inline struct hstate *hstate_file(struct file *f)
{
return hstate_inode(file_inode(f));
@@ -729,11 +731,6 @@ static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
return NULL;
}
-static inline struct hstate *hstate_inode(struct inode *i)
-{
- return NULL;
-}
-
static inline struct hstate *page_hstate(struct page *page)
{
return NULL;
--
2.20.1
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