ordered-data.h | Explore in Territory

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2007 Oracle.  All rights reserved.
 */

#ifndef BTRFS_ORDERED_DATA_H
#define BTRFS_ORDERED_DATA_H

#include <linux/types.h>
#include <linux/list.h>
#include <linux/refcount.h>
#include <linux/completion.h>
#include <linux/rbtree.h>
#include <linux/wait.h>
#include "async-thread.h"

struct inode;
struct page;
struct extent_state;
struct btrfs_inode;
struct btrfs_root;
struct btrfs_fs_info;

struct btrfs_ordered_sum { … };

/*
 * Bits for btrfs_ordered_extent::flags.
 *
 * BTRFS_ORDERED_IO_DONE is set when all of the blocks are written.
 * It is used to make sure metadata is inserted into the tree only once
 * per extent.
 *
 * BTRFS_ORDERED_COMPLETE is set when the extent is removed from the
 * rbtree, just before waking any waiters.  It is used to indicate the
 * IO is done and any metadata is inserted into the tree.
 */
enum { … };

/* BTRFS_ORDERED_* flags that specify the type of the extent. */
#define BTRFS_ORDERED_TYPE_FLAGS …

struct btrfs_ordered_extent { … };

int btrfs_finish_one_ordered(struct btrfs_ordered_extent *ordered_extent);
int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent);

void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode,
				struct btrfs_ordered_extent *entry);
void btrfs_finish_ordered_extent(struct btrfs_ordered_extent *ordered,
				 struct page *page, u64 file_offset, u64 len,
				 bool uptodate);
void btrfs_mark_ordered_io_finished(struct btrfs_inode *inode,
				struct page *page, u64 file_offset,
				u64 num_bytes, bool uptodate);
bool btrfs_dec_test_ordered_pending(struct btrfs_inode *inode,
				    struct btrfs_ordered_extent **cached,
				    u64 file_offset, u64 io_size);

/*
 * This represents details about the target file extent item of a write operation.
 */
struct btrfs_file_extent { … };

struct btrfs_ordered_extent *btrfs_alloc_ordered_extent(
			struct btrfs_inode *inode, u64 file_offset,
			const struct btrfs_file_extent *file_extent, unsigned long flags);
void btrfs_add_ordered_sum(struct btrfs_ordered_extent *entry,
			   struct btrfs_ordered_sum *sum);
struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct btrfs_inode *inode,
							 u64 file_offset);
void btrfs_start_ordered_extent(struct btrfs_ordered_extent *entry);
int btrfs_wait_ordered_range(struct btrfs_inode *inode, u64 start, u64 len);
struct btrfs_ordered_extent *
btrfs_lookup_first_ordered_extent(struct btrfs_inode *inode, u64 file_offset);
struct btrfs_ordered_extent *btrfs_lookup_first_ordered_range(
			struct btrfs_inode *inode, u64 file_offset, u64 len);
struct btrfs_ordered_extent *btrfs_lookup_ordered_range(
		struct btrfs_inode *inode,
		u64 file_offset,
		u64 len);
void btrfs_get_ordered_extents_for_logging(struct btrfs_inode *inode,
					   struct list_head *list);
u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr,
			       const struct btrfs_block_group *bg);
void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr,
			      const struct btrfs_block_group *bg);
void btrfs_lock_and_flush_ordered_range(struct btrfs_inode *inode, u64 start,
					u64 end,
					struct extent_state **cached_state);
bool btrfs_try_lock_ordered_range(struct btrfs_inode *inode, u64 start, u64 end,
				  struct extent_state **cached_state);
struct btrfs_ordered_extent *btrfs_split_ordered_extent(
			struct btrfs_ordered_extent *ordered, u64 len);
void btrfs_mark_ordered_extent_error(struct btrfs_ordered_extent *ordered);
int __init ordered_data_init(void);
void __cold ordered_data_exit(void);

#endif
linux/fs/btrfs/ordered-data.h
