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Date: Wed, 3 Aug 2016 05:51:39 +0200 From: Greg KH <gregkh@...uxfoundation.org> To: Vladimir Davydov <vdavydov@...tuozzo.com> Cc: stable@...r.kernel.org, Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...nel.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH stable 4.6+] radix-tree: account nodes to memcg only if explicitly requested 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 <vdavydov@...tuozzo.com> > Acked-by: Johannes Weiner <hannes@...xchg.org> > Acked-by: Michal Hocko <mhocko@...e.com> > Cc: <stable@...r.kernel.org> [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? confused, greg k-h
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