From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38738 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755894AbdLTRV4 (ORCPT ); Wed, 20 Dec 2017 12:21:56 -0500 Subject: Patch "percpu: don't forget to free the temporary struct pcpu_alloc_info" has been added to the 4.14-stable tree To: nicolas.pitre@linaro.org, alexander.levin@verizon.com, dennisszhou@gmail.com, gregkh@linuxfoundation.org, nico@linaro.org, tj@kernel.org Cc: , From: Date: Wed, 20 Dec 2017 18:20:30 +0100 Message-ID: <15137904301199@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled percpu: don't forget to free the temporary struct pcpu_alloc_info to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: percpu-don-t-forget-to-free-the-temporary-struct-pcpu_alloc_info.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Wed Dec 20 18:17:52 CET 2017 From: Nicolas Pitre Date: Tue, 3 Oct 2017 18:29:49 -0400 Subject: percpu: don't forget to free the temporary struct pcpu_alloc_info From: Nicolas Pitre [ Upstream commit 438a50618095061920d3a30d4c5ca1ef2e0ff860 ] Unlike the SMP case, the !SMP case does not free the memory for struct pcpu_alloc_info allocated in setup_per_cpu_areas(). And to give it a chance of being reused by the page allocator later, align it to a page boundary just like its size. Signed-off-by: Nicolas Pitre Acked-by: Dennis Zhou Signed-off-by: Tejun Heo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- mm/percpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1856,7 +1856,7 @@ struct pcpu_alloc_info * __init pcpu_all __alignof__(ai->groups[0].cpu_map[0])); ai_size = base_size + nr_units * sizeof(ai->groups[0].cpu_map[0]); - ptr = memblock_virt_alloc_nopanic(PFN_ALIGN(ai_size), 0); + ptr = memblock_virt_alloc_nopanic(PFN_ALIGN(ai_size), PAGE_SIZE); if (!ptr) return NULL; ai = ptr; @@ -2719,6 +2719,7 @@ void __init setup_per_cpu_areas(void) if (pcpu_setup_first_chunk(ai, fc) < 0) panic("Failed to initialize percpu areas."); + pcpu_free_alloc_info(ai); } #endif /* CONFIG_SMP */ Patches currently in stable-queue which might be from nicolas.pitre@linaro.org are queue-4.14/percpu-don-t-forget-to-free-the-temporary-struct-pcpu_alloc_info.patch