5.4-stable review patch. If anyone has any objections, please let me know.
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From: Mike Rapoport rppt@linux.ibm.com
[ Upstream commit d3c251ab95b69f3dc189c4657baeac1b4c050789 ]
There are several places that mention DISCONIGMEM in comments or have stale code guarded by CONFIG_DISCONTIGMEM.
Remove the dead code and update the comments.
Link: https://lkml.kernel.org/r/20210608091316.3622-7-rppt@kernel.org Signed-off-by: Mike Rapoport rppt@linux.ibm.com Acked-by: Arnd Bergmann arnd@arndb.de Reviewed-by: David Hildenbrand david@redhat.com Cc: Geert Uytterhoeven geert@linux-m68k.org Cc: Ivan Kokshaysky ink@jurassic.park.msu.ru Cc: Jonathan Corbet corbet@lwn.net Cc: Matt Turner mattst88@gmail.com Cc: Richard Henderson rth@twiddle.net Cc: Vineet Gupta vgupta@synopsys.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Stable-dep-of: e1a9ae457369 ("mips: Fix max_mapnr being uninitialized on early stages") Signed-off-by: Sasha Levin sashal@kernel.org --- arch/ia64/kernel/topology.c | 5 ++--- arch/ia64/mm/numa.c | 5 ++--- arch/mips/include/asm/mmzone.h | 6 ------ arch/mips/mm/init.c | 3 --- arch/nds32/include/asm/memory.h | 6 ------ arch/xtensa/include/asm/page.h | 4 ---- include/linux/gfp.h | 4 ++-- 7 files changed, 6 insertions(+), 27 deletions(-)
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index 09fc385c2acd..3639e0a7cb3b 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -3,9 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * This file contains NUMA specific variables and functions which can - * be split away from DISCONTIGMEM and are used on NUMA machines with - * contiguous memory. + * This file contains NUMA specific variables and functions which are used on + * NUMA machines with contiguous memory. * 2002/08/07 Erich Focht efocht@ess.nec.de * Populate cpu entries in sysfs for non-numa systems as well * Intel Corporation - Ashok Raj diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c index 5e1015eb6d0d..ad6837d00e7d 100644 --- a/arch/ia64/mm/numa.c +++ b/arch/ia64/mm/numa.c @@ -3,9 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * This file contains NUMA specific variables and functions which can - * be split away from DISCONTIGMEM and are used on NUMA machines with - * contiguous memory. + * This file contains NUMA specific variables and functions which are used on + * NUMA machines with contiguous memory. * * 2002/08/07 Erich Focht efocht@ess.nec.de */ diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h index b826b8473e95..7649ab45e80c 100644 --- a/arch/mips/include/asm/mmzone.h +++ b/arch/mips/include/asm/mmzone.h @@ -20,10 +20,4 @@ #define nid_to_addrbase(nid) 0 #endif
-#ifdef CONFIG_DISCONTIGMEM - -#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT) - -#endif /* CONFIG_DISCONTIGMEM */ - #endif /* _ASM_MMZONE_H_ */ diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index a73899933505..dee6a790d42d 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -453,9 +453,6 @@ void __init mem_init(void) BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
#ifdef CONFIG_HIGHMEM -#ifdef CONFIG_DISCONTIGMEM -#error "CONFIG_HIGHMEM and CONFIG_DISCONTIGMEM dont work together yet" -#endif max_mapnr = highend_pfn ? highend_pfn : max_low_pfn; #else max_mapnr = max_low_pfn; diff --git a/arch/nds32/include/asm/memory.h b/arch/nds32/include/asm/memory.h index 940d32842793..62faafbc28e4 100644 --- a/arch/nds32/include/asm/memory.h +++ b/arch/nds32/include/asm/memory.h @@ -76,18 +76,12 @@ * virt_to_page(k) convert a _valid_ virtual address to struct page * * virt_addr_valid(k) indicates whether a virtual address is valid */ -#ifndef CONFIG_DISCONTIGMEM - #define ARCH_PFN_OFFSET PHYS_PFN_OFFSET #define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
#define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)) #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
-#else /* CONFIG_DISCONTIGMEM */ -#error CONFIG_DISCONTIGMEM is not supported yet. -#endif /* !CONFIG_DISCONTIGMEM */ - #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#endif diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index 09c56cba442e..5a42d663612b 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h @@ -181,10 +181,6 @@ static inline unsigned long ___pa(unsigned long va) #define pfn_valid(pfn) \ ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
-#ifdef CONFIG_DISCONTIGMEM -# error CONFIG_DISCONTIGMEM not supported -#endif - #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 61f2f6ff9467..c89f8456f18d 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -471,8 +471,8 @@ static inline int gfp_zonelist(gfp_t flags) * There are two zonelists per node, one for all zones with memory and * one containing just zones from the node the zonelist belongs to. * - * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets - * optimized to &contig_page_data at compile-time. + * For the case of non-NUMA systems the NODE_DATA() gets optimized to + * &contig_page_data at compile-time. */ static inline struct zonelist *node_zonelist(int nid, gfp_t flags) {