[PATCH] mm: Move HOLES_IN_ZONE into mm

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commit a55749639dc1 ("ia64: drop marked broken DISCONTIGMEM and VIRTUAL_MEM_MAP")
drop VIRTUAL_MEM_MAP, so there is no need HOLES_IN_ZONE on ia64.

Also move HOLES_IN_ZONE into mm/Kconfig, select it if architecture needs
this feature.

Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
 arch/arm64/Kconfig | 4 +---
 arch/ia64/Kconfig  | 3 ---
 arch/mips/Kconfig  | 3 ---
 mm/Kconfig         | 3 +++
 4 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f0b17d758912..3c5a53e0db91 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -202,6 +202,7 @@ config ARM64
 	select HAVE_KPROBES
 	select HAVE_KRETPROBES
 	select HAVE_GENERIC_VDSO
+	select HOLES_IN_ZONE
 	select IOMMU_DMA if IOMMU_SUPPORT
 	select IRQ_DOMAIN
 	select IRQ_FORCED_THREADING
@@ -1053,9 +1054,6 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
 	def_bool y
 	depends on NUMA
 
-config HOLES_IN_ZONE
-	def_bool y
-
 source "kernel/Kconfig.hz"
 
 config ARCH_SPARSEMEM_ENABLE
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 279252e3e0f7..36499e99102d 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -308,9 +308,6 @@ config NODES_SHIFT
 	  MAX_NUMNODES will be 2^(This value).
 	  If in doubt, use the default.
 
-config HOLES_IN_ZONE
-	bool
-
 config HAVE_ARCH_NODEDATA_EXTENSION
 	def_bool y
 	depends on NUMA
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7a174ea61ca5..c6d522fbd67d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1233,9 +1233,6 @@ config HAVE_PLAT_MEMCPY
 config ISA_DMA_API
 	bool
 
-config HOLES_IN_ZONE
-	bool
-
 config SYS_SUPPORTS_RELOCATABLE
 	bool
 	help
diff --git a/mm/Kconfig b/mm/Kconfig
index a8a367c30053..afc57cbf1cea 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -128,6 +128,9 @@ config HAVE_FAST_GUP
 	depends on MMU
 	bool
 
+config HOLES_IN_ZONE
+	bool
+
 # Don't discard allocated memory used to track "memory" and "reserved" memblocks
 # after early boot, so it can still be used to test for validity of memory.
 # Also, memblocks are updated with memory hot(un)plug.
-- 
2.26.2






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