08 Mar, 2010

1 commit

• 52cf25d0a   Driver core: Constify struct sysfs_ops in struct kobj_type ... Browse Code »

  Constify struct sysfs_ops.

  This is part of the ops structure constification
  effort started by Arjan van de Ven et al.

  Benefits of this constification:

  * prevents modification of data that is shared
  (referenced) by many other structure instances
  at runtime

  * detects/prevents accidental (but not intentional)
  modification attempts on archs that enforce
  read-only kernel data at runtime

  * potentially better optimized code as the compiler
  can assume that the const data cannot be changed

  * the compiler/linker move const data into .rodata
  and therefore exclude them from false sharing

  Signed-off-by: Emese Revfy
  Acked-by: David Teigland
  Acked-by: Matt Domsch
  Acked-by: Maciej Sosnowski
  Acked-by: Hans J. Koch
  Acked-by: Pekka Enberg
  Acked-by: Jens Axboe
  Acked-by: Stephen Hemminger
  Signed-off-by: Greg Kroah-Hartman

  Emese Revfy

  2010-03-08 09:04:49 +0800  

17 Feb, 2010

1 commit

• 9307f6b19   dm: sysfs revert add empty release function to avoid debug warning ... Browse Code »

  Revert commit d2bb7df8cac647b92f51fb84ae735771e7adbfa7 at Greg's request.

  Author: Milan Broz
  Date: Thu Dec 10 23:51:53 2009 +0000

  dm: sysfs add empty release function to avoid debug warning

  This patch just removes an unnecessary warning:
  kobject: 'dm': does not have a release() function,
  it is broken and must be fixed.

  The kobject is embedded in mapped device struct, so
  code does not need to release memory explicitly here.

  Cc: Greg KH
  Signed-off-by: Alasdair G Kergon

  Alasdair G Kergon

  2010-02-17 02:43:04 +0800  

11 Dec, 2009

2 commits

• 4f186f8bb   dm: rename dm_suspended to dm_suspended_md ... Browse Code »

  This patch renames dm_suspended() to dm_suspended_md() and
  keeps it internal to dm.
  No functional change.

  Signed-off-by: Kiyoshi Ueda
  Signed-off-by: Jun'ichi Nomura
  Cc: Mike Anderson
  Signed-off-by: Alasdair G Kergon

  Kiyoshi Ueda

  2009-12-11 07:52:26 +0800  
• d2bb7df8c   dm: sysfs add empty release function to avoid debug warning ... Browse Code »

  This patch just removes an unnecessary warning:
  kobject: 'dm': does not have a release() function,
  it is broken and must be fixed.

  The kobject is embedded in mapped device struct, so
  code does not need to release memory explicitly here.

  Cc: stable@kernel.org
  Signed-off-by: Milan Broz
  Signed-off-by: Alasdair G Kergon

  Milan Broz

  2009-12-11 07:51:53 +0800  

22 Jun, 2009

1 commit

• 486d220fe   dm: sysfs add suspended attribute ... Browse Code »

  Add a file named 'suspended' to each device-mapper device directory in
  sysfs. It holds the value 1 while the device is suspended. Otherwise
  it holds 0.

  Signed-off-by: Peter Rajnoha
  Signed-off-by: Alasdair G Kergon

  Peter Rajnoha

  2009-06-22 17:12:29 +0800  

06 Jan, 2009

1 commit

• 784aae735   dm: add name and uuid to sysfs ... Browse Code »

  Implement simple read-only sysfs entry for device-mapper block device.

  This patch adds a simple sysfs directory named "dm" under block device
  properties and implements
  - name attribute (string containing mapped device name)
  - uuid attribute (string containing UUID, or empty string if not set)

  The kobject is embedded in mapped_device struct, so no additional
  memory allocation is needed for initializing sysfs entry.

  During the processing of sysfs attribute we need to lock mapped device
  which is done by a new function dm_get_from_kobj, which returns the md
  associated with kobject and increases the usage count.

  Each 'show attribute' function is responsible for its own locking.

  Signed-off-by: Milan Broz
  Signed-off-by: Alasdair G Kergon

  Milan Broz

  2009-01-06 11:05:12 +0800