linux-next: manual merge of the akpm-current tree with the percpu tree

Hi all,

Today's linux-next merge of the akpm-current tree got a conflict in:

  mm/memcontrol.c

between commit:

  0f0cace35fa6 ("mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init")

from the percpu tree and commits:

  dfe14954c6e4 ("mm: memcg/slab: don't create kmalloc-cg caches with cgroup.memory=nokmem")
  3fd971b13287 ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5")
  53270d6d0c1f ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5-fix")

from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

Andrew, you may want to look at commit

  4d5c8aedc8aa ("mm, memcg: introduce mem_cgroup_kmem_disabled()")

from the percpu tree.

-- 
Cheers,
Stephen Rothwell

diff --cc mm/memcontrol.c
index 3c1641c67122,b9a6db6a7d4f..000000000000

--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c

@@@ -80,10 -80,10 +80,10 @@@ struct mem_cgroup *root_mem_cgroup __re
  DEFINE_PER_CPU(struct mem_cgroup *, int_active_memcg);
  
  /* Socket memory accounting disabled? */
 -static bool cgroup_memory_nosocket;
 +static bool cgroup_memory_nosocket __ro_after_init;
  
  /* Kernel memory accounting disabled? */
- static bool cgroup_memory_nokmem __ro_after_init;
 -bool cgroup_memory_nokmem;
++bool cgroup_memory_nokmem __ro_after_init;
  
  /* Whether the swap controller is active */
  #ifdef CONFIG_MEMCG_SWAP

On Mon, Jun 07, 2021 at 06:33:12PM +1000, Stephen Rothwell wrote:

Hi all,

Today's linux-next merge of the akpm-current tree got a conflict in:

  mm/memcontrol.c

between commit:

  0f0cace35fa6 ("mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init")

from the percpu tree and commits:

  dfe14954c6e4 ("mm: memcg/slab: don't create kmalloc-cg caches with cgroup.memory=nokmem")
  3fd971b13287 ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5")
  53270d6d0c1f ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5-fix")

from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary.

Thank you, Stephen!

The resulting patch looks good to me.

Roman

Hi all,

On Mon, 7 Jun 2021 18:33:12 +1000 Stephen Rothwell [off-list ref] wrote:

This is now a conflict between the percpu tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

Hi Stephen,

On Thu, Jul 01, 2021 at 01:23:16PM +1000, Stephen Rothwell wrote:

Hi all,

On Mon, 7 Jun 2021 18:33:12 +1000 Stephen Rothwell [off-list ref] wrote:

quoted

Today's linux-next merge of the akpm-current tree got a conflict in:

  mm/memcontrol.c

between commit:

  0f0cace35fa6 ("mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init")

from the percpu tree and commits:

  dfe14954c6e4 ("mm: memcg/slab: don't create kmalloc-cg caches with cgroup.memory=nokmem")
  3fd971b13287 ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5")
  53270d6d0c1f ("mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5-fix")

from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

Andrew, you may want to look at commit

  4d5c8aedc8aa ("mm, memcg: introduce mem_cgroup_kmem_disabled()")

from the percpu tree.

-- 
Cheers,
Stephen Rothwell

diff --cc mm/memcontrol.c
index 3c1641c67122,b9a6db6a7d4f..000000000000

--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c

@@@ -80,10 -80,10 +80,10 @@@ struct mem_cgroup *root_mem_cgroup __re
  DEFINE_PER_CPU(struct mem_cgroup *, int_active_memcg);
  
  /* Socket memory accounting disabled? */
 -static bool cgroup_memory_nosocket;
 +static bool cgroup_memory_nosocket __ro_after_init;
  
  /* Kernel memory accounting disabled? */
- static bool cgroup_memory_nokmem __ro_after_init;
 -bool cgroup_memory_nokmem;
++bool cgroup_memory_nokmem __ro_after_init;
  
  /* Whether the swap controller is active */
  #ifdef CONFIG_MEMCG_SWAP

This is now a conflict between the percpu tree and Linus' tree.

Yeah I'm aware. I'm planning on sending my PR tomorrow mentioning it. I
also have an example merge up in percpu#for-5.14-merge for Linus.

Thanks,
Dennis