From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 3 Aug 2016 11:15:25 +0300 From: Vladimir Davydov To: Greg KH CC: , Johannes Weiner , Michal Hocko , , Subject: Re: [PATCH stable 4.6+] radix-tree: account nodes to memcg only if explicitly requested Message-ID: <20160803081525.GF13263@esperanza> References: <1470141934-4568-1-git-send-email-vdavydov@virtuozzo.com> <20160803035139.GB31125@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20160803035139.GB31125@kroah.com> Sender: owner-linux-mm@kvack.org List-ID: On Wed, Aug 03, 2016 at 05:51:39AM +0200, Greg KH wrote: > On Tue, Aug 02, 2016 at 03:45:34PM +0300, Vladimir Davydov wrote: > > Radix trees may be used not only for storing page cache pages, so > > unconditionally accounting radix tree nodes to the current memory cgroup > > is bad: if a radix tree node is used for storing data shared among > > different cgroups we risk pinning dead memory cgroups forever. So let's > > only account radix tree nodes if it was explicitly requested by passing > > __GFP_ACCOUNT to INIT_RADIX_TREE. Currently, we only want to account > > page cache entries, so mark mapping->page_tree so. > > > > Signed-off-by: Vladimir Davydov > > Acked-by: Johannes Weiner > > Acked-by: Michal Hocko > > Cc: [4.6+] > > --- > > fs/inode.c | 2 +- > > lib/radix-tree.c | 14 ++++++++++---- > > 2 files changed, 11 insertions(+), 5 deletions(-) > > Is this patch in Linus's tree already? Not yet, it should only be added to 4.8, so I shouldn't have sent this (didn't know how patches are submitted to stable). Please ignore. > > confused, Sorry for the noise. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org