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authorThomas Hellstrom <thellstrom@vmware.com>2019-11-30 17:51:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 06:29:19 -0800
commitbf1a12a8095615c9486f5463ca473d2d69ff6952 (patch)
tree2842ce13fe032b060a35d91a7b6f76eddded873e /include/asm-generic/pgtable.h
parentmm/rmap.c: use VM_BUG_ON_PAGE() in __page_check_anon_rmap() (diff)
downloadlinux-dev-bf1a12a8095615c9486f5463ca473d2d69ff6952.tar.xz
linux-dev-bf1a12a8095615c9486f5463ca473d2d69ff6952.zip
mm: move the backup x_devmap() functions to asm-generic/pgtable.h
The asm-generic/pgtable.h include file appears to be the correct place for the backup x_devmap() inline functions. Moving them here is also necessary if we want to include x_devmap() in the [pmd|pud]_unstable functions. So move the x_devmap() functions to asm-generic/pgtable.h Link: http://lkml.kernel.org/r/20191115115808.21181-1-thomas_os@shipmail.org Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--include/asm-generic/pgtable.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 9cdcbc7c0b7b..3127f9028f54 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -914,6 +914,21 @@ static inline int pud_write(pud_t pud)
}
#endif /* pud_write */
+#if !defined(CONFIG_ARCH_HAS_PTE_DEVMAP) || !defined(CONFIG_TRANSPARENT_HUGEPAGE)
+static inline int pmd_devmap(pmd_t pmd)
+{
+ return 0;
+}
+static inline int pud_devmap(pud_t pud)
+{
+ return 0;
+}
+static inline int pgd_devmap(pgd_t pgd)
+{
+ return 0;
+}
+#endif
+
#if !defined(CONFIG_TRANSPARENT_HUGEPAGE) || \
(defined(CONFIG_TRANSPARENT_HUGEPAGE) && \
!defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD))