From: Dave Hansen <dave.hansen@intel.com>
To: Boaz Harrosh <boaz@plexistor.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
Jens Axboe <axboe@fb.com>,
Matthew Wilcox <matthew.r.wilcox@intel.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-nvdimm@lists.01.org, Toshi Kani <toshi.kani@hp.com>,
linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 5/9] mm: Let sparse_{add,remove}_one_section receive a node_id
Date: Tue, 09 Sep 2014 11:36:42 -0700 [thread overview]
Message-ID: <540F48BA.2090304@intel.com> (raw)
In-Reply-To: <540F20AB.4000404@plexistor.com>
On 09/09/2014 08:45 AM, Boaz Harrosh wrote:
> This is for add_persistent_memory that will want a section of pages
> allocated but without any zone associated. This is because belonging
> to a zone will give the memory to the page allocators, but
> persistent_memory belongs to a block device, and is not available for
> regular volatile usage.
I don't think we should be taking patches like this in to the kernel
until we've seen the other side of it. Where is the page allocator code
which will see a page belonging to no zone? Am I missing it in this set?
I see about 80 or so calls to page_zone() in the kernel. How will a
zone-less page look to all of these sites?
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next prev parent reply other threads:[~2014-09-09 18:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1409173922-7484-1-git-send-email-ross.zwisler@linux.intel.com>
2014-09-09 15:37 ` [PATCH 0/9] pmem: Fixes and farther development (mm: add_persistent_memory) Boaz Harrosh
2014-09-09 15:45 ` [PATCH 5/9] mm: Let sparse_{add,remove}_one_section receive a node_id Boaz Harrosh
2014-09-09 18:36 ` Dave Hansen [this message]
2014-09-10 10:07 ` Boaz Harrosh
2014-09-10 16:10 ` Dave Hansen
2014-09-10 17:25 ` Boaz Harrosh
2014-09-10 18:28 ` Dave Hansen
2014-09-11 8:39 ` Boaz Harrosh
2014-09-11 17:07 ` Dave Hansen
2014-09-14 9:36 ` Boaz Harrosh
2014-09-09 15:47 ` [PATCH 6/9] mm: New add_persistent_memory/remove_persistent_memory Boaz Harrosh
2014-09-09 15:48 ` [PATCH 7/9] pmem: Add support for page structs Boaz Harrosh
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