[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>

fs/gfs2/ops_file.c

@@ -94,12 +94,12 @@ static int gfs2_read_actor(read_descriptor_t *desc, struct page *page,
 
 	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 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 	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 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl)
 }
 
 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,
 };
 

fs/gfs2/ops_fstype.c

@@ -791,7 +791,7 @@ static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
 	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 set_bdev_super(struct super_block *s, void *data)
 
 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)

fs/gfs2/ops_inode.c

@@ -1014,7 +1014,7 @@ static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
 
 /**
  * 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
  *