The patch titled
Subject: mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long
has been added to the -mm tree. Its filename is
mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: YASUAKI ISHIMATSU <yasu.isimatu@xxxxxxxxx>
Subject: mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long
find_{smallest|biggest}_section_pfn()s find the smallest/biggest section
and return the pfn of the section. But the functions are defined as int.
So the functions always return 0x00000000 - 0xffffffff. It means if
memory address is over 16TB, the functions does not work correctly.
To handle 64 bit value, the patch defines
find_{smallest|biggest}_section_pfn() as unsigned long.
Fixes: 815121d2b5cd ("memory_hotplug: clear zone when removing the memory")
Link: http://lkml.kernel.org/r/d9d5593a-d0a4-c4be-ab08-493df59a85c6@xxxxxxxxx
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/memory_hotplug.c~mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long
+++ a/mm/memory_hotplug.c
@@ -338,7 +338,7 @@ EXPORT_SYMBOL_GPL(__add_pages);
#ifdef CONFIG_MEMORY_HOTREMOVE
/* find the smallest valid pfn in the range [start_pfn, end_pfn) */
-static int find_smallest_section_pfn(int nid, struct zone *zone,
+static unsigned long find_smallest_section_pfn(int nid, struct zone *zone,
unsigned long start_pfn,
unsigned long end_pfn)
{
@@ -363,7 +363,7 @@ static int find_smallest_section_pfn(int
}
/* find the biggest valid pfn in the range [start_pfn, end_pfn). */
-static int find_biggest_section_pfn(int nid, struct zone *zone,
+static unsigned long find_biggest_section_pfn(int nid, struct zone *zone,
unsigned long start_pfn,
unsigned long end_pfn)
{
_
Patches currently in -mm which might be from yasu.isimatu@xxxxxxxxx are
mm-memory_hotplug-change-pfn_to_section_nr-section_nr_to_pfn-macro-to-inline-function.patch
mm-memory_hotplug-define-find_smallestbiggest_section_pfn-as-unsigned-long.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
