[GFS2] More code style updates

As per Jan Engelhardt's fifth email. This has most of the changes
recommended, which is the removal of casts which are not required,
some indenting fixes and similar.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 9dcf72a..b551074 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -94,12 +94,12 @@
 
 	kaddr = kmap(page);
 	memcpy(desc->arg.buf, kaddr + offset, size);
-        kunmap(page);
+	kunmap(page);
 
-        desc->count = count - size;
-        desc->written += size;
-        desc->arg.buf += size;
-        return size;
+	desc->count = count - size;
+	desc->written += size;
+	desc->arg.buf += size;
+	return size;
 }
 
 int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state,
@@ -700,7 +700,7 @@
 	int error = 0;
 
 	state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED;
-	flags = ((IS_SETLKW(cmd)) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE;
+	flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE;
 
 	mutex_lock(&fp->f_fl_mutex);
 
@@ -780,32 +780,32 @@
 }
 
 const struct file_operations gfs2_file_fops = {
-	.llseek = gfs2_llseek,
-	.read = generic_file_read,
-	.readv = generic_file_readv,
-	.aio_read = generic_file_aio_read,
-	.write = generic_file_write,
-	.writev = generic_file_writev,
-	.aio_write = generic_file_aio_write,
-	.unlocked_ioctl = gfs2_ioctl,
-	.mmap = gfs2_mmap,
-	.open = gfs2_open,
-	.release = gfs2_close,
-	.fsync = gfs2_fsync,
-	.lock = gfs2_lock,
-	.sendfile = generic_file_sendfile,
-	.flock = gfs2_flock,
-	.splice_read = generic_file_splice_read,
-	.splice_write = generic_file_splice_write,
+	.llseek		= gfs2_llseek,
+	.read		= generic_file_read,
+	.readv		= generic_file_readv,
+	.aio_read	= generic_file_aio_read,
+	.write		= generic_file_write,
+	.writev		= generic_file_writev,
+	.aio_write	= generic_file_aio_write,
+	.unlocked_ioctl	= gfs2_ioctl,
+	.mmap		= gfs2_mmap,
+	.open		= gfs2_open,
+	.release	= gfs2_close,
+	.fsync		= gfs2_fsync,
+	.lock		= gfs2_lock,
+	.sendfile	= generic_file_sendfile,
+	.flock		= gfs2_flock,
+	.splice_read	= generic_file_splice_read,
+	.splice_write	= generic_file_splice_write,
 };
 
 const struct file_operations gfs2_dir_fops = {
-	.readdir = gfs2_readdir,
-	.unlocked_ioctl = gfs2_ioctl,
-	.open = gfs2_open,
-	.release = gfs2_close,
-	.fsync = gfs2_fsync,
-	.lock = gfs2_lock,
-	.flock = gfs2_flock,
+	.readdir	= gfs2_readdir,
+	.unlocked_ioctl	= gfs2_ioctl,
+	.open		= gfs2_open,
+	.release	= gfs2_close,
+	.fsync		= gfs2_fsync,
+	.lock		= gfs2_lock,
+	.flock		= gfs2_flock,
 };
 
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index d39314d..c94422b 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -791,7 +791,7 @@
 	if (error)
 		goto out;
 	sb = mnt->mnt_sb;
-	sdp = (struct gfs2_sbd*)sb->s_fs_info;
+	sdp = sb->s_fs_info;
 	sdp->sd_gfs2mnt = mnt;
 out:
 	return error;
@@ -832,7 +832,7 @@
  
 static int test_bdev_super(struct super_block *s, void *data)
 {
-	return (void *)s->s_bdev == data;
+	return s->s_bdev == data;
 }
 
 static struct super_block* get_gfs2_sb(const char *dev_name)
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index c680f05..2f38313 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1014,7 +1014,7 @@
 
 /**
  * gfs2_getattr - Read out an inode's attributes
- * @mnt: ?
+ * @mnt: The vfsmount the inode is being accessed from
  * @dentry: The dentry to stat
  * @stat: The inode's stats
  *