linux-kernel - Re: [PATCH RFC 1/2] mm: meminit: initialise more memory for inode/dentry hash tables in early boot

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Date:	Thu, 3 Mar 2016 08:34:08 +0000
From:	Mel Gorman <mgorman@...hsingularity.net>
To:	Li Zhang <zhlcindy@...il.com>
Cc:	mpe@...erman.id.au, khandual@...ux.vnet.ibm.com,
	aneesh.kumar@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Li Zhang <zhlcindy@...ux.vnet.ibm.com>
Subject: Re: [PATCH RFC 1/2] mm: meminit: initialise more memory for
 inode/dentry hash tables in early boot

On Thu, Mar 03, 2016 at 03:01:40PM +0800, Li Zhang wrote:
> From: Li Zhang <zhlcindy@...ux.vnet.ibm.com>
> 
> This patch is based on Mel Gorman's old patch in the mailing list,
> https://lkml.org/lkml/2015/5/5/280 which is dicussed but it is
> fixed with a completion to wait for all memory initialised in
> page_alloc_init_late(). It is to fix the oom problem on X86
> with 24TB memory which allocates memory in late initialisation.
> But for Power platform with 32TB memory, it causes a call trace
> in vfs_caches_init->inode_init() and inode hash table needs more
> memory.
> So this patch allocates 1GB for 0.25TB/node for large system
> as it is mentioned in https://lkml.org/lkml/2015/5/1/627
> 

Acked-by: Mel Gorman <mgorman@...hsingularity.net>

-- 
Mel Gorman
SUSE Labs