linux-kernel - [PATCH v2 0/5] minor clean-up and optimize highmem related code

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Date:	Thu,  1 Nov 2012 01:56:32 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Joonsoo Kim <js1304@...il.com>
Subject: [PATCH v2 0/5] minor clean-up and optimize highmem related code

This patchset clean-up and optimize highmem related code.

Change from v1
Rebase on v3.7-rc3
[4] Instead of returning index of last flushed entry, return first index.
And update last_pkmap_nr to this index to optimize more.

Summary for v1
[1] is just clean-up and doesn't introduce any functional change.
[2-3] are for clean-up and optimization.
These eliminate an useless lock opearation and list management.
[4-5] is for optimization related to flush_all_zero_pkmaps().

Joonsoo Kim (5):
  mm, highmem: use PKMAP_NR() to calculate an index of pkmap
  mm, highmem: remove useless pool_lock
  mm, highmem: remove page_address_pool list
  mm, highmem: makes flush_all_zero_pkmaps() return index of first
    flushed entry
  mm, highmem: get virtual address of the page using PKMAP_ADDR()

 include/linux/highmem.h |    1 +
 mm/highmem.c            |  108 ++++++++++++++++++++++-------------------------
 2 files changed, 51 insertions(+), 58 deletions(-)

-- 
1.7.9.5

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