Re: [PATCH 1/3] mm, meminit: Recalculate pcpu batch and high limits after init completes

Re: [PATCH 1/3] mm, meminit: Recalculate pcpu batch and high limits after init completes

[Mel Gorman]

On Sat, Oct 26, 2019 at 01:10:35PM +0000, Sasha Levin wrote:
> Hi,
> 
> [This is an automated email]
> 
> This commit has been processed because it contains a -stable tag.
> The stable tag indicates that it's relevant for the following trees: 4.1+
> 
> The bot has tested the following trees: v5.3.7, v4.19.80, v4.14.150, v4.9.197, v4.4.197.
> 
> v5.3.7: Build OK!
> v4.19.80: Build failed! Errors:
> 
> v4.14.150: Failed to apply! Possible dependencies:
>     3c2c648842843 ("mm/page_alloc.c: fix typos in comments")
>     66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type")
>     c9e97a1997fbf ("mm: initialize pages on demand during boot")
> 
> v4.9.197: Failed to apply! Possible dependencies:
>     3c2c648842843 ("mm/page_alloc.c: fix typos in comments")
>     66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type")
>     c9e97a1997fbf ("mm: initialize pages on demand during boot")
> 
> v4.4.197: Failed to apply! Possible dependencies:
>     0a687aace3b8e ("mm,oom: do not loop !__GFP_FS allocation if the OOM killer is disabled")
>     0caeef63e6d2f ("libnvdimm: Add a poison list and export badblocks")
>     0e749e54244ee ("dax: increase granularity of dax_clear_blocks() operations")
>     34c0fd540e79f ("mm, dax, pmem: introduce pfn_t")
>     3c2c648842843 ("mm/page_alloc.c: fix typos in comments")
>     3da88fb3bacfa ("mm, oom: move GFP_NOFS check to out_of_memory")
>     4b94ffdc4163b ("x86, mm: introduce vmem_altmap to augment vmemmap_populate()")
>     5020e285856cb ("mm, oom: give __GFP_NOFAIL allocations access to memory reserves")
>     52db400fcd502 ("pmem, dax: clean up clear_pmem()")
>     66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type")
>     7cf91a98e607c ("mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous")
>     87ba05dff3510 ("libnvdimm: don't fail init for full badblocks list")
>     8c9c1701c7c23 ("mm/memblock: introduce for_each_memblock_type()")
>     9476df7d80dfc ("mm: introduce find_dev_pagemap()")
>     ad9a8bde2cb19 ("libnvdimm, pmem: move definition of nvdimm_namespace_add_poison to nd.h")
>     b2e0d1625e193 ("dax: fix lifetime of in-kernel dax mappings with dax_map_atomic()")
>     b95f5f4391fad ("libnvdimm: convert to statically allocated badblocks")
>     ba6c19fd113a3 ("include/linux/memblock.h: Clean up code for several trivial details")
>     c9e97a1997fbf ("mm: initialize pages on demand during boot")
> 
> 
> NOTE: The patch will not be queued to stable trees until it is upstream.
> 
> How should we proceed with this patch?
> 

What were the 4.19.80 build errors?

For the older kernels, it would have to be confirmed those kernels are
definietly affected. The test machines I tried fails to even boot on those
kernels so I need to find a NUMA machine that is old enough to boot those
kernels and confirmed affected by the bug before determining what the
backport needs to look like.

-- 
Mel Gorman
SUSE Labs