Re: [RFC PATCH 2/8] memory-hotplug: offline memory only when it is onlined
From: Yasuaki Ishimatsu <hidden>
Date: 2012-07-20 07:47:04
Also in:
linux-acpi, linux-mm, lkml
Hi Wen, 2012/07/20 16:10, Wen Congyang wrote:
offline_memory() will fail if the memory is not onlined. So check whether the memory is onlined before calling offline_memory(). CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <redacted> CC: Len Brown <redacted> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <redacted> CC: Christoph Lameter <redacted> Cc: Minchan Kim <redacted> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <redacted> CC: Yasuaki Ishimatsu <redacted> Signed-off-by: Wen Congyang <redacted> ---
I have no comment. Reviewed-by: Yasuaki Ishimatsu <redacted> Thanks, Yasuaki Ishimatsu
quoted hunk ↗ jump to hunk
drivers/acpi/acpi_memhotplug.c | 10 +++++++--- 1 files changed, 7 insertions(+), 3 deletions(-)diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index db8de39..712e767 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c@@ -323,9 +323,13 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device) */ list_for_each_entry_safe(info, n, &mem_device->res_list, list) { if (info->enabled) { - result = offline_memory(info->start_addr, info->length); - if (result) - return result; + if (!is_memblk_offline(info->start_addr, + info->length)) { + result = offline_memory(info->start_addr, + info->length); + if (result) + return result; + } } list_del(&info->list); kfree(info);