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authorTejun Heo <tj@kernel.org>2010-11-13 11:55:18 +0100
committerTejun Heo <tj@kernel.org>2010-11-13 11:55:18 +0100
commitd4d77629953eabd3c14f6fa5746f6b28babfc55f (patch)
tree38cce0d4764ecb34a9f7f49332959780e28bb786 /kernel
parent75f1dc0d076d1c1168f2115f1941ea627d38bd5a (diff)
downloadop-kernel-dev-d4d77629953eabd3c14f6fa5746f6b28babfc55f.zip
op-kernel-dev-d4d77629953eabd3c14f6fa5746f6b28babfc55f.tar.gz
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/swap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 513a77f1..b019609 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -907,8 +907,8 @@ int swsusp_check(void)
{
int error;
- hib_resume_bdev = open_by_devnum(swsusp_resume_device,
- FMODE_READ, NULL);
+ hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device,
+ FMODE_READ, NULL);
if (!IS_ERR(hib_resume_bdev)) {
set_blocksize(hib_resume_bdev, PAGE_SIZE);
clear_page(swsusp_header);
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