From: Matthew Wilcox <willy@infradead.org>
To: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Dave Chinner <david@fromorbit.com>,
djwong@kernel.org, Theodore Ts'o <tytso@mit.edu>,
Chris Mason <clm@fb.com>, David Sterba <dsterba@suse.cz>,
Jan Kara <jack@suse.cz>,
ceph-devel@vger.kernel.org, cluster-devel@redhat.com,
linux-nfs@vger.kernel.org, logfs@logfs.org,
linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-btrfs@vger.kernel.org, linux-mtd@lists.infradead.org,
reiserfs-devel@vger.kernel.org,
linux-ntfs-dev@lists.sourceforge.net,
linux-f2fs-devel@lists.sourceforge.net,
linux-afs@lists.infradead.org,
LKML <linux-kernel@vger.kernel.org>,
Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 1/6] lockdep: allow to disable reclaim lockup detection
Date: Mon, 6 Feb 2017 06:26:41 -0800 [thread overview]
Message-ID: <20170206142641.GG2267@bombadil.infradead.org> (raw)
In-Reply-To: <20170206140718.16222-2-mhocko@kernel.org>
On Mon, Feb 06, 2017 at 03:07:13PM +0100, Michal Hocko wrote:
> While we are at it also make sure that the radix tree doesn't
> accidentaly override tags stored in the upper part of the gfp_mask.
> diff --git a/lib/radix-tree.c b/lib/radix-tree.c
> index 9dc093d5ef39..7550be09f9d6 100644
> --- a/lib/radix-tree.c
> +++ b/lib/radix-tree.c
> @@ -2274,6 +2274,8 @@ static int radix_tree_cpu_dead(unsigned int cpu)
> void __init radix_tree_init(void)
> {
> int ret;
> +
> + BUILD_BUG_ON(RADIX_TREE_MAX_TAGS + __GFP_BITS_SHIFT > 32);
> radix_tree_node_cachep = kmem_cache_create("radix_tree_node",
> sizeof(struct radix_tree_node), 0,
> SLAB_PANIC | SLAB_RECLAIM_ACCOUNT,
That's going to have a conceptual conflict with some patches I have
in flight. I'll take this part through my radix tree patch collection.
next prev parent reply other threads:[~2017-02-06 14:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-06 14:07 [PATCH 0/6 v4] scope GFP_NOFS api Michal Hocko
2017-02-06 14:07 ` [PATCH 1/6] lockdep: allow to disable reclaim lockup detection Michal Hocko
2017-02-06 14:26 ` Matthew Wilcox [this message]
2017-02-06 14:34 ` Michal Hocko
2017-02-06 15:24 ` Matthew Wilcox
2017-02-06 15:30 ` Michal Hocko
2017-02-06 14:07 ` [PATCH 2/6] xfs: abstract PF_FSTRANS to PF_MEMALLOC_NOFS Michal Hocko
2017-02-06 14:07 ` [PATCH 3/6] mm: introduce memalloc_nofs_{save,restore} API Michal Hocko
2017-02-06 14:07 ` [PATCH 4/6] xfs: use memalloc_nofs_{save,restore} instead of memalloc_noio* Michal Hocko
2017-02-06 15:39 ` Matthew Wilcox
2017-02-06 17:44 ` Michal Hocko
2017-02-06 18:32 ` Darrick J. Wong
2017-02-06 18:47 ` Michal Hocko
2017-02-06 19:51 ` Darrick J. Wong
2017-02-06 21:18 ` Michal Hocko
2017-02-06 22:51 ` Dave Chinner
2017-02-07 7:17 ` Michal Hocko
2017-02-06 14:07 ` [PATCH 5/6] jbd2: mark the transaction context with the scope GFP_NOFS context Michal Hocko
2017-02-06 14:07 ` [PATCH 6/6] jbd2: make the whole kjournald2 kthread NOFS safe Michal Hocko
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