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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-08-05 21:15:01 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-06 17:57:48 +0200 |
| commit | 58c1b5b079071d82b2f924000b7e8fb5585ce7d8 (patch) | |
| tree | 74178ceb6462b68cba9f1b144d450dafcaf01c22 /mm | |
| parent | [PATCH] memory hotadd fixes: change find_next_system_ram's return value manner (diff) | |
| download | linux-58c1b5b079071d82b2f924000b7e8fb5585ce7d8.tar.xz linux-58c1b5b079071d82b2f924000b7e8fb5585ce7d8.zip | |
[PATCH] memory hotadd fixes: find_next_system_ram catch range fix
find_next_system_ram() is used to find available memory resource at onlining
newly added memory. This patch fixes following problem.
find_next_system_ram() cannot catch this case.
Resource: (start)-------------(end)
Section : (start)-------------(end)
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Keith Mannthey <kmannth@gmail.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory_hotplug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 7d25cc12235f..26f1840879d6 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -163,7 +163,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages) res.flags = IORESOURCE_MEM; /* we just need system ram */ section_end = res.end; - while (find_next_system_ram(&res) >= 0) { + while ((res.start < res.end) && (find_next_system_ram(&res) >= 0)) { start_pfn = (unsigned long)(res.start >> PAGE_SHIFT); nr_pages = (unsigned long) ((res.end + 1 - res.start) >> PAGE_SHIFT); |