linux-kernel - [PATCH 0/3] Make pfn_t suitable for placing in the radix tree

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Date:	Fri, 11 Mar 2016 16:13:01 -0500
From:	Matthew Wilcox <matthew.r.wilcox@...el.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, willy@...ux.intel.com
Subject: [PATCH 0/3] Make pfn_t suitable for placing in the radix tree

I did some experimenting with converting the DAX radix tree from storing
sector numbers to storing pfn_t.  While we're not ready to do that
conversion yet, these pieces make sense to at least get reviewed now,
and maybe get upstream.

I think the first patch is worthwhile all by itself as a stepping stone to
making SG lists contain PFNs instead of pages.

Matthew Wilcox (3):
  pfn_t: Change the encoding
  pfn_t: Support for huge PFNs
  pfn_t: New functions pfn_t_add and pfn_t_cmp

 include/linux/pfn_t.h | 72 +++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 61 insertions(+), 11 deletions(-)

-- 
2.7.0