linux/fs/ext4/migrate.c

// SPDX-License-Identifier: LGPL-2.1
/*
 * Copyright IBM Corporation, 2007
 * Author Aneesh Kumar K.V <[email protected]>
 *
 */

#include <linux/slab.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"

/*
 * The contiguous blocks details which can be
 * represented by a single extent
 */
struct migrate_struct { … };

static int finish_range(handle_t *handle, struct inode *inode,
				struct migrate_struct *lb)

{ … }

static int update_extent_range(handle_t *handle, struct inode *inode,
			       ext4_fsblk_t pblock, struct migrate_struct *lb)
{ … }

static int update_ind_extent_range(handle_t *handle, struct inode *inode,
				   ext4_fsblk_t pblock,
				   struct migrate_struct *lb)
{ … }

static int update_dind_extent_range(handle_t *handle, struct inode *inode,
				    ext4_fsblk_t pblock,
				    struct migrate_struct *lb)
{ … }

static int update_tind_extent_range(handle_t *handle, struct inode *inode,
				    ext4_fsblk_t pblock,
				    struct migrate_struct *lb)
{ … }

static int free_dind_blocks(handle_t *handle,
				struct inode *inode, __le32 i_data)
{ … }

static int free_tind_blocks(handle_t *handle,
				struct inode *inode, __le32 i_data)
{ … }

static int free_ind_block(handle_t *handle, struct inode *inode, __le32 *i_data)
{ … }

static int ext4_ext_swap_inode_data(handle_t *handle, struct inode *inode,
						struct inode *tmp_inode)
{ … }

static int free_ext_idx(handle_t *handle, struct inode *inode,
					struct ext4_extent_idx *ix)
{ … }

/*
 * Free the extent meta data blocks only
 */
static int free_ext_block(handle_t *handle, struct inode *inode)
{ … }

int ext4_ext_migrate(struct inode *inode)
{ … }

/*
 * Migrate a simple extent-based inode to use the i_blocks[] array
 */
int ext4_ind_migrate(struct inode *inode)
{ … }