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mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM 

After removal of the DISCONTIGMEM memory model the FLAT_NODE_MEM_MAP
configuration option is equivalent to FLATMEM.

Drop CONFIG_FLAT_NODE_MEM_MAP and use CONFIG_FLATMEM instead.

Link: https://lkml.kernel.org/r/20210608091316.3622-10-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-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>
This commit is contained in:
Mike Rapoport 2021-06-28 19:43:05 -07:00 committed by Linus Torvalds
parent a9ee6cf5c6
commit 43b02ba93b
5 changed files with 7 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/mmzone.h
View File

@ -788,7 +788,7 @@ typedef struct pglist_data {
struct zonelist node_zonelists[MAX_ZONELISTS];
int nr_zones; /* number of populated zones in this node */
#ifdef CONFIG_FLAT_NODE_MEM_MAP /* means !SPARSEMEM */
#ifdef CONFIG_FLATMEM /* means !SPARSEMEM */
struct page *node_mem_map;
#ifdef CONFIG_PAGE_EXTENSION
struct page_ext *node_page_ext;
@ -878,7 +878,7 @@ typedef struct pglist_data {
#define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages)
#define node_spanned_pages(nid) (NODE_DATA(nid)->node_spanned_pages)
#ifdef CONFIG_FLAT_NODE_MEM_MAP
#ifdef CONFIG_FLATMEM
#define pgdat_page_nr(pgdat, pagenr) ((pgdat)->node_mem_map + (pagenr))
#else
#define pgdat_page_nr(pgdat, pagenr) pfn_to_page((pgdat)->node_start_pfn + (pagenr))

2
kernel/crash_core.c
View File

@ -484,7 +484,7 @@ static int __init crash_save_vmcoreinfo_init(void)
VMCOREINFO_OFFSET(page, compound_head);
VMCOREINFO_OFFSET(pglist_data, node_zones);
VMCOREINFO_OFFSET(pglist_data, nr_zones);
#ifdef CONFIG_FLAT_NODE_MEM_MAP
#ifdef CONFIG_FLATMEM
VMCOREINFO_OFFSET(pglist_data, node_mem_map);
#endif
VMCOREINFO_OFFSET(pglist_data, node_start_pfn);

4
mm/Kconfig
View File

@ -55,10 +55,6 @@ config FLATMEM
def_bool y
depends on !SPARSEMEM || FLATMEM_MANUAL
config FLAT_NODE_MEM_MAP
def_bool y
depends on !SPARSEMEM
#
# SPARSEMEM_EXTREME (which is the default) does some bootmem
# allocations when sparse_init() is called. If this cannot

6
mm/page_alloc.c
View File

@ -6547,7 +6547,7 @@ static void __meminit zone_init_free_lists(struct zone *zone)
}
}
#if !defined(CONFIG_FLAT_NODE_MEM_MAP)
#if !defined(CONFIG_FLATMEM)
/*
* Only struct pages that correspond to ranges defined by memblock.memory
* are zeroed and initialized by going through __init_single_page() during
@ -7403,7 +7403,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat)
}
}
#ifdef CONFIG_FLAT_NODE_MEM_MAP
#ifdef CONFIG_FLATMEM
static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
{
unsigned long __maybe_unused start = 0;
@ -7451,7 +7451,7 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
}
#else
static void __ref alloc_node_mem_map(struct pglist_data *pgdat) { }
#endif /* CONFIG_FLAT_NODE_MEM_MAP */
#endif /* CONFIG_FLATMEM */
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
static inline void pgdat_set_deferred_range(pg_data_t *pgdat)

2
mm/page_ext.c
View File

@ -191,7 +191,7 @@ void __init page_ext_init_flatmem(void)
panic("Out of memory");
}
#else /* CONFIG_FLAT_NODE_MEM_MAP */
#else /* CONFIG_FLATMEM */
struct page_ext *lookup_page_ext(const struct page *page)
{