linux-kernel - [PATCHv2 0/2] remap_file

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Message-Id: <1399552888-11024-1-git-send-email-kirill.shutemov@linux.intel.com>
Date:	Thu,  8 May 2014 15:41:26 +0300
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	peterz@...radead.org, mingo@...nel.org,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCHv2 0/2] remap_file_pages() decommission

Hi Andrew and Linus,

These two patches demonstrate how we can get rid nonlinear mappings.

The first patch documents remap_file_pages(2) deprecation and add printk
into syscall code. The patch could be propagated through stable kernel if
the approach with remap_file_pages() emulation is okay.

The second patch replaces remap_file_pages(2) with and emulation. I didn't
find any real code (apart LTP) to test it on. So I wrote simple test case.
See commit message for numbers.

I will prepare separate patchset to cleanup all nonlinear mappings
leftovers if the approach with emulation is desirable.

Comments?

Kirill A. Shutemov (2):
  mm: mark remap_file_pages() syscall as deprecated
  mm: replace remap_file_pages() syscall with emulation

 Documentation/vm/remap_file_pages.txt |  27 ++++
 include/linux/fs.h                    |   8 +-
 mm/Makefile                           |   2 +-
 mm/fremap.c                           | 282 ----------------------------------
 mm/mmap.c                             |  66 ++++++++
 mm/nommu.c                            |   8 -
 6 files changed, 100 insertions(+), 293 deletions(-)
 create mode 100644 Documentation/vm/remap_file_pages.txt
 delete mode 100644 mm/fremap.c

-- 
2.0.0.rc2

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