The patch titled
Subject: mm: fix pmd_devmap compile error
has been added to the -mm tree. Its filename is
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix.patch
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------------------------------------------------------
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: mm: fix pmd_devmap compile error
The kbuild robot reports the following with an i386 randconfig:
In file included from arch/x86/include/asm/atomic.h:4:0,
from include/linux/atomic.h:4,
from include/linux/crypto.h:20,
from arch/x86/kernel/asm-offsets.c:8:
include/linux/huge_mm.h: In function 'pmd_trans_huge_lock':
>> include/linux/huge_mm.h:128:30: error: implicit declaration of function 'pmd_devmap' [-Werror=implicit-function-declaration]
if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd))
^
Fix by moving the fallback definition of pmd_devmap() earlier in mm.h,
before it include huge_mm.h.
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff -puN include/linux/mm.h~mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix include/linux/mm.h
--- a/include/linux/mm.h~mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix
+++ a/include/linux/mm.h
@@ -336,6 +336,13 @@ struct inode;
#include <linux/page-flags.h>
#include <linux/huge_mm.h>
+#if !defined(__HAVE_ARCH_PTE_DEVMAP) || !defined(CONFIG_TRANSPARENT_HUGEPAGE)
+static inline int pmd_devmap(pmd_t pmd)
+{
+ return 0;
+}
+#endif
+
/*
* Methods to modify the page usage count.
*
@@ -1459,13 +1466,6 @@ static inline int __pud_alloc(struct mm_
int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
#endif
-#if !defined(__HAVE_ARCH_PTE_DEVMAP) || !defined(CONFIG_TRANSPARENT_HUGEPAGE)
-static inline int pmd_devmap(pmd_t pmd)
-{
- return 0;
-}
-#endif
-
#if defined(__PAGETABLE_PMD_FOLDED) || !defined(CONFIG_MMU)
static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud,
unsigned long address)
_
Patches currently in -mm which might be from dan.j.williams@xxxxxxxxx are
pmem-dax-clean-up-clear_pmem.patch
dax-increase-granularity-of-dax_clear_blocks-operations.patch
dax-guarantee-page-aligned-results-from-bdev_direct_access.patch
dax-fix-lifetime-of-in-kernel-dax-mappings-with-dax_map_atomic.patch
dax-fix-lifetime-of-in-kernel-dax-mappings-with-dax_map_atomic-v3.patch
um-kill-pfn_t.patch
kvm-rename-pfn_t-to-kvm_pfn_t.patch
mm-dax-pmem-introduce-pfn_t.patch
mm-skip-memory-block-registration-for-zone_device.patch
mm-introduce-find_dev_pagemap.patch
x86-mm-introduce-vmem_altmap-to-augment-vmemmap_populate.patch
libnvdimm-pfn-pmem-allocate-memmap-array-in-persistent-memory.patch
avr32-convert-to-asm-generic-memory_modelh.patch
hugetlb-fix-compile-error-on-tile.patch
frv-fix-compiler-warning-from-definition-of-__pmd.patch
x86-mm-introduce-_page_devmap.patch
mm-dax-gpu-convert-vm_insert_mixed-to-pfn_t.patch
mm-dax-convert-vmf_insert_pfn_pmd-to-pfn_t.patch
libnvdimm-pmem-move-request_queue-allocation-earlier-in-probe.patch
mm-dax-pmem-introduce-getput_dev_pagemap-for-dax-gup.patch
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd.patch
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5.patch
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5-fix.patch
mm-x86-get_user_pages-for-dax-mappings.patch
mm-x86-get_user_pages-for-dax-mappings-v5.patch
dax-provide-diagnostics-for-pmd-mapping-failures.patch
dax-re-enable-dax-pmd-mappings.patch
a.patch
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