From 34b815395d79cfc9b032b005feab1950592525f6 Mon Sep 17 00:00:00 2001
From: Pingfan Liu <kernelfans@gmail.com>
Date: Wed, 1 Apr 2020 21:09:27 -0700
Subject: [PATCH] mm/sparse: rename pfn_present() to pfn_in_present_section()
References: git fixes (mm/pgalloc)
Patch-mainline: v5.7-rc1
Git-commit: e03d1f78341e8a16f6cb5be5dfcd37ddc31a6839
After introducing mem sub section concept, pfn_present() loses its literal
meaning, and will not be necessary a truth on partial populated mem
section.
Since all of the callers use it to judge an absent section, it is better
to rename pfn_present() as pfn_in_present_section().
Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Leonardo Bras <leonardo@linux.ibm.com>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: Nathan Lynch <nathanl@linux.ibm.com>
Link: http://lkml.kernel.org/r/1581919110-29575-1-git-send-email-kernelfans@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
arch/powerpc/platforms/pseries/hotplug-memory.c | 2 +-
drivers/base/node.c | 2 +-
include/linux/mmzone.h | 4 ++--
mm/page_ext.c | 2 +-
mm/shuffle.c | 2 +-
5 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 746fdeb0e22a..25e8be401018 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -360,7 +360,7 @@ static bool lmb_is_removable(struct drmem_lmb *lmb)
for (i = 0; i < scns_per_block; i++) {
pfn = PFN_DOWN(phys_addr);
- if (!pfn_present(pfn)) {
+ if (!pfn_in_present_section(pfn)) {
phys_addr += MIN_MEMORY_BLOCK_SIZE;
continue;
}
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 75b7e6f6535b..b6ea2c49a9a4 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -771,7 +771,7 @@ static int register_mem_sect_under_node(struct memory_block *mem_blk,
* memory block could have several absent sections from start.
* skip pfn range from absent section
*/
- if (!pfn_present(pfn)) {
+ if (!pfn_in_present_section(pfn)) {
pfn = round_down(pfn + PAGES_PER_SECTION,
PAGES_PER_SECTION) - 1;
continue;
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 68aa00beb3ca..6dfb8bfee035 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1372,7 +1372,7 @@ static inline int pfn_valid(unsigned long pfn)
}
#endif
-static inline int pfn_present(unsigned long pfn)
+static inline int pfn_in_present_section(unsigned long pfn)
{
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
@@ -1399,7 +1399,7 @@ void sparse_init(void);
#else
#define sparse_init() do {} while (0)
#define sparse_index_init(_sec, _nid) do {} while (0)
-#define pfn_present pfn_valid
+#define pfn_in_present_section pfn_valid
#define subsection_map_init(_pfn, _nr_pages) do {} while (0)
#endif /* CONFIG_SPARSEMEM */
diff --git a/mm/page_ext.c b/mm/page_ext.c
index 4ade843ff588..08ded037f89f 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -304,7 +304,7 @@ static int __meminit online_page_ext(unsigned long start_pfn,
}
for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) {
- if (!pfn_present(pfn))
+ if (!pfn_in_present_section(pfn))
continue;
fail = init_section_page_ext(pfn, nid);
}
diff --git a/mm/shuffle.c b/mm/shuffle.c
index 3ce12481b1dc..c039cfd229bf 100644
--- a/mm/shuffle.c
+++ b/mm/shuffle.c
@@ -72,7 +72,7 @@ static struct page * __meminit shuffle_valid_page(unsigned long pfn, int order)
return NULL;
/* ...is the pfn in a present section or a hole? */
- if (!pfn_present(pfn))
+ if (!pfn_in_present_section(pfn))
return NULL;
/* ...is the page free and currently on a free_area list? */