The patch titled
memory hotadd fixes: change find_next_system_ram's return value manner
has been added to the -mm tree. Its filename is
memory-hotadd-fixes-change-find_next_system_rams.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: memory hotadd fixes: change find_next_system_ram's return value manner
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
find_next_system_ram() returns valid memory range which meets requested area,
only used by memory-hot-add.
This function always rewrite requested resource even if returned area is not
fully fit in requested one. And sometimes the returnd resource is larger than
requested area. This annoyes the caller. This patch changes the returned
value to fit in requested area.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Keith Mannthey <kmannth@xxxxxxxxx>
Cc: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Cc: Dave Hansen <haveblue@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/resource.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff -puN kernel/resource.c~memory-hotadd-fixes-change-find_next_system_rams kernel/resource.c
--- a/kernel/resource.c~memory-hotadd-fixes-change-find_next_system_rams
+++ a/kernel/resource.c
@@ -261,8 +261,10 @@ int find_next_system_ram(struct resource
if (!p)
return -1;
/* copy data */
- res->start = p->start;
- res->end = p->end;
+ if (res->start < p->start)
+ res->start = p->start;
+ if (res->end > p->end)
+ res->end = p->end;
return 0;
}
#endif
_
Patches currently in -mm which might be from kamezawa.hiroyu@xxxxxxxxxxxxxx are
memory-hotadd-fixes-not-aligned-memory-hotadd.patch
memory-hotadd-fixes-change-find_next_system_rams.patch
memory-hotadd-fixes-find_next_system_ram-catch-range.patch
memory-hotadd-fixes-avoid-check-in-acpi.patch
memory-hotadd-fixes-avoid-registering-res-twice.patch
namespaces-utsname-sysctl-hack.patch
reiser4-hardirq-include-fix.patch
-
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