From: Christophe Leroy christophe.leroy@c-s.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@intel.com Signed-off-by: Christophe Leroy christophe.leroy@c-s.fr Signed-off-by: Andrew Morton akpm@linux-foundation.org Reviewed-by: Mike Kravetz mike.kravetz@oracle.com Cc: Baoquan He bhe@redhat.com Cc: Nishanth Aravamudan nacc@us.ibm.com Cc: Nick Piggin npiggin@suse.de Cc: Adam Litke agl@us.ibm.com Cc: Andi Kleen ak@suse.de Link: http://lkml.kernel.org/r/7e8c3a3c9a587b9cd8a2f146df32a421b961f3a2.1584432148... Link: https://patchwork.ozlabs.org/patch/1255548/#2386036 Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.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;