[linux.git] / fs / btrfs / file-item.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_FILE_ITEM_H
#define BTRFS_FILE_ITEM_H

#include "accessors.h"

#define BTRFS_FILE_EXTENT_INLINE_DATA_START		\
		(offsetof(struct btrfs_file_extent_item, disk_bytenr))

static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
{
	return BTRFS_MAX_ITEM_SIZE(info) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
}

/*
 * Return the number of bytes used by the item on disk, minus the size of any
 * extent headers.  If a file is compressed on disk, this is the compressed
 * size.
 */
static inline u32 btrfs_file_extent_inline_item_len(
						const struct extent_buffer *eb,
						int nr)
{
	return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
}

static inline unsigned long btrfs_file_extent_inline_start(
				const struct btrfs_file_extent_item *e)
{
	return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
}

static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
{
	return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
}

int btrfs_del_csums(struct btrfs_trans_handle *trans,
		    struct btrfs_root *root, u64 bytenr, u64 len);
blk_status_t btrfs_lookup_bio_sums(struct btrfs_bio *bbio);
int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans,
			     struct btrfs_root *root, u64 objectid, u64 pos,
			     u64 num_bytes);
int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
			     struct btrfs_root *root,
			     struct btrfs_path *path, u64 objectid,
			     u64 bytenr, int mod);
int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
			   struct btrfs_root *root,
			   struct btrfs_ordered_sum *sums);
blk_status_t btrfs_csum_one_bio(struct btrfs_bio *bbio);
blk_status_t btrfs_alloc_dummy_sum(struct btrfs_bio *bbio);
int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
			     struct list_head *list, int search_commit,
			     bool nowait);
int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end,
			    struct list_head *list, int search_commit,
			    bool nowait);
int btrfs_lookup_csums_bitmap(struct btrfs_root *root, struct btrfs_path *path,
			      u64 start, u64 end, u8 *csum_buf,
			      unsigned long *csum_bitmap);
void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
				     const struct btrfs_path *path,
				     struct btrfs_file_extent_item *fi,
				     struct extent_map *em);
int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,
					u64 len);
int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len);
void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);
u64 btrfs_file_extent_end(const struct btrfs_path *path);

#endif
Commit	Line	Data
7c8ede16 JB	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef BTRFS_FILE_ITEM_H
	4	#define BTRFS_FILE_ITEM_H
	5
6bfd0ffa JB	6	#include "accessors.h"
	7
	8	#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
	9	(offsetof(struct btrfs_file_extent_item, disk_bytenr))
	10
	11	static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
	12	{
	13	return BTRFS_MAX_ITEM_SIZE(info) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
	14	}
	15
	16	/*
	17	* Return the number of bytes used by the item on disk, minus the size of any
	18	* extent headers. If a file is compressed on disk, this is the compressed
	19	* size.
	20	*/
	21	static inline u32 btrfs_file_extent_inline_item_len(
	22	const struct extent_buffer *eb,
	23	int nr)
	24	{
	25	return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
	26	}
	27
	28	static inline unsigned long btrfs_file_extent_inline_start(
	29	const struct btrfs_file_extent_item *e)
	30	{
	31	return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
	32	}
	33
	34	static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
	35	{
	36	return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
	37	}
	38
7c8ede16 JB	39	int btrfs_del_csums(struct btrfs_trans_handle *trans,
7c8ede16 JB	40	struct btrfs_root *root, u64 bytenr, u64 len);
4ae2edf1	41	blk_status_t btrfs_lookup_bio_sums(struct btrfs_bio *bbio);
7c8ede16 JB	42	int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans,
	43	struct btrfs_root *root, u64 objectid, u64 pos,
	44	u64 num_bytes);
	45	int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
	46	struct btrfs_root *root,
	47	struct btrfs_path *path, u64 objectid,
	48	u64 bytenr, int mod);
	49	int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
	50	struct btrfs_root *root,
	51	struct btrfs_ordered_sum *sums);
f8c44673	52	blk_status_t btrfs_csum_one_bio(struct btrfs_bio *bbio);
cbfce4c7	53	blk_status_t btrfs_alloc_dummy_sum(struct btrfs_bio *bbio);
f8c44673 CH	54	int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
	55	struct list_head *list, int search_commit,
	56	bool nowait);
97e38239 QW	57	int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end,
	58	struct list_head *list, int search_commit,
	59	bool nowait);
3c771c19 QW	60	int btrfs_lookup_csums_bitmap(struct btrfs_root root, struct btrfs_path path,
	61	u64 start, u64 end, u8 *csum_buf,
	62	unsigned long *csum_bitmap);
7c8ede16 JB	63	void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
	64	const struct btrfs_path *path,
	65	struct btrfs_file_extent_item *fi,
7c8ede16 JB	66	struct extent_map *em);
	67	int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,
	68	u64 len);
	69	int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len);
	70	void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);
	71	u64 btrfs_file_extent_end(const struct btrfs_path *path);
	72
	73	#endif