linux/kernel/power
Tejun Heo d4d7762995 block: clean up blkdev_get() wrappers and their users
After recent blkdev_get() modifications, open_by_devnum() and
open_bdev_exclusive() are simple wrappers around blkdev_get().
Replace them with blkdev_get_by_dev() and blkdev_get_by_path().

blkdev_get_by_dev() is identical to open_by_devnum().
blkdev_get_by_path() is slightly different in that it doesn't
automatically add %FMODE_EXCL to @mode.

All users are converted.  Most conversions are mechanical and don't
introduce any behavior difference.  There are several exceptions.

* btrfs now sets FMODE_EXCL in btrfs_device->mode, so there's no
  reason to OR it explicitly on blkdev_put().

* gfs2, nilfs2 and the generic mount_bdev() now set FMODE_EXCL in
  sb->s_mode.

* With the above changes, sb->s_mode now always should contain
  FMODE_EXCL.  WARN_ON_ONCE() added to kill_block_super() to detect
  errors.

The new blkdev_get_*() functions are with proper docbook comments.
While at it, add function description to blkdev_get() too.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Joern Engel <joern@lazybastard.org>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Jan Kara <jack@suse.cz>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp>
Cc: reiserfs-devel@vger.kernel.org
Cc: xfs-masters@oss.sgi.com
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
2010-11-13 11:55:18 +01:00
..
block_io.c block: unify flags for struct bio and struct request 2010-08-07 18:20:39 +02:00
console.c
hibernate.c PM / Hibernate: Make some boot messages look less scary 2010-10-17 01:57:48 +02:00
Kconfig PM: Introduce library for device-specific OPPs (v7) 2010-10-17 01:57:50 +02:00
main.c PM: Add sysfs attr for rechecking dev hash from PM trace 2010-10-17 01:57:50 +02:00
Makefile suspend: Move NVS save/restore code to generic suspend functionality 2010-06-10 11:02:34 -04:00
nvs.c suspend: Move NVS save/restore code to generic suspend functionality 2010-06-10 11:02:34 -04:00
power.h PM / Hibernate: Make default image size depend on total RAM size 2010-10-17 01:57:43 +02:00
poweroff.c Input: sysrq - drop tty argument from sysrq ops handlers 2010-08-19 22:07:06 -07:00
process.c PM: Allow wakeup events to abort freezing of tasks 2010-10-17 01:57:49 +02:00
snapshot.c use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages 2010-10-26 16:52:13 -07:00
suspend_test.c
suspend.c PM / Suspend: Fix ordering of calls in suspend error paths 2010-07-19 02:00:35 +02:00
swap.c block: clean up blkdev_get() wrappers and their users 2010-11-13 11:55:18 +01:00
user.c PM / Hibernate: Snapshot cleanup 2010-05-10 23:08:17 +02:00