linux-kernel - [PATCH 0/4] mm: introduce fincore() v2

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Message-Id: <1404424335-30128-1-git-send-email-n-horiguchi@ah.jp.nec.com>
Date:	Thu,  3 Jul 2014 17:52:11 -0400
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Konstantin Khlebnikov <koct9i@...il.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Johannes Weiner <hannes@...xchg.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	David Miller <davem@...emloft.net>,
	Andres Freund <andres@...quadrant.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Dave Hansen <dave.hansen@...el.com>,
	Christoph Hellwig <hch@...radead.org>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Linux API <linux-api@...r.kernel.org>,
	Naoya Horiguchi <nao.horiguchi@...il.com>
Subject: [PATCH 0/4] mm: introduce fincore() v2

This is the 2nd version of fincore patchset.

In the previous discussion[1], I got many feedbacks about the following
points:
- robust ABI handling is needed (especially about PAGECACHE_TAG_*)
- man page is necessary
- the parameter/return value of sys_fincore() needs improvement
- the order of bits FINCORE_*  and the order of 8 bytes entry in buffer
  should be identical
so I covered these in this version.

Any comments/reviews are welcomed.

[1] http://lwn.net/Articles/601020/

Thanks,
Naoya Horiguchi
---
Tree: git@...hub.com:Naoya-Horiguchi/linux.git
Branch: v3.16-rc3/fincore.ver2
---
Summary:

Naoya Horiguchi (4):
      define PAGECACHE_TAG_* as enumeration under include/uapi
      mm: introduce fincore()
      selftests/fincore: add test code for fincore()
      man2/fincore.2: document general description about fincore(2)

 arch/x86/syscalls/syscall_64.tbl                   |   1 +
 include/linux/fs.h                                 |   9 +-
 include/linux/syscalls.h                           |   4 +
 include/uapi/linux/pagecache.h                     | 111 ++++++
 man2/fincore.2                                     | 383 ++++++++++++++++++++
 mm/Makefile                                        |   2 +-
 mm/fincore.c                                       | 322 +++++++++++++++++
 tools/testing/selftests/Makefile                   |   1 +
 tools/testing/selftests/fincore/Makefile           |  31 ++
 .../selftests/fincore/create_hugetlbfs_file.c      |  49 +++
 tools/testing/selftests/fincore/fincore.c          | 166 +++++++++
 tools/testing/selftests/fincore/run_fincoretests   | 401 +++++++++++++++++++++
 12 files changed, 1471 insertions(+), 9 deletions(-)
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