exofs: exofs_file_fsync and exofs_file_flush correctness

 * along with exofs; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <linux/buffer_head.h>

#include "exofs.h"

static int exofs_release_file(struct inode *inode, struct file *filp)

	return 0;

}

/* exofs_file_fsync - flush the inode to disk

 *

 *   Note, in exofs all metadata is written as part of inode, regardless.

 *   The writeout is synchronous

 */

static int exofs_file_fsync(struct file *filp, int datasync)

{

	int ret;

	struct address_space *mapping = filp->f_mapping;

	struct inode *inode = mapping->host;

	struct inode *inode = filp->f_mapping->host;

	struct writeback_control wbc = {

		.sync_mode = WB_SYNC_ALL,

		.nr_to_write = 0, /* metadata-only; caller takes care of data */

	};

	struct super_block *sb;

	ret = filemap_write_and_wait(mapping);

	if (ret)

		return ret;

	if (!(inode->i_state & I_DIRTY))

		return 0;

	if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))

		return 0;

	/* sync the inode attributes */

	ret = write_inode_now(inode, 1);

	ret = sync_inode(inode, &wbc);

	/* This is a good place to write the sb */

	/* TODO: Sechedule an sb-sync on create */

static int exofs_flush(struct file *file, fl_owner_t id)

{

	exofs_file_fsync(file, 1);

	int ret = vfs_fsync(file, 0);

	/* TODO: Flush the OSD target */

	return 0;

	return ret;

}

const struct file_operations exofs_file_operations = {