file-item.c File Reference

#include <linux/bio.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/highmem.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
#include "print-tree.h"

Go to the source code of this file.

Macros
#define	__MAX_CSUM_ITEMS(r, size)
#define	MAX_CSUM_ITEMS(r, size)
#define	MAX_ORDERED_SUM_BYTES(r)

Functions
int	btrfs_insert_file_extent (struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid, u64 pos, u64 disk_offset, u64 disk_num_bytes, u64 num_bytes, u64 offset, u64 ram_bytes, u8 compression, u8 encryption, u16 other_encoding)
struct btrfs_csum_item *	btrfs_lookup_csum (struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 bytenr, int cow)
int	btrfs_lookup_file_extent (struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 objectid, u64 offset, int mod)
int	btrfs_lookup_bio_sums (struct btrfs_root *root, struct inode *inode, struct bio *bio, u32 *dst)
int	btrfs_lookup_bio_sums_dio (struct btrfs_root *root, struct inode *inode, struct bio *bio, u64 offset)
int	btrfs_lookup_csums_range (struct btrfs_root *root, u64 start, u64 end, struct list_head *list, int search_commit)
int	btrfs_csum_one_bio (struct btrfs_root *root, struct inode *inode, struct bio *bio, u64 file_start, int contig)
int	btrfs_del_csums (struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 len)
int	btrfs_csum_file_blocks (struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_ordered_sum *sums)

Macro Definition Documentation

#define __MAX_CSUM_ITEMS	(		r,
			size
	)

Value:

((unsigned long)(((BTRFS_LEAF_DATA_SIZE(r) - \
                   sizeof(struct btrfs_item) * 2) / \
                  size) - 1))

Definition at line 28 of file file-item.c.

#define MAX_CSUM_ITEMS	(		r,
			size
	)

Value:

(min_t(u32, __MAX_CSUM_ITEMS(r, size), \
                       PAGE_CACHE_SIZE))

Definition at line 32 of file file-item.c.

#define MAX_ORDERED_SUM_BYTES

(

r

)

Value:

((PAGE_SIZE - \
                   sizeof(struct btrfs_ordered_sum)) / \
                   sizeof(struct btrfs_sector_sum) * \
                   (r)->sectorsize - (r)->sectorsize)

Definition at line 35 of file file-item.c.

Function Documentation

int btrfs_csum_file_blocks	(	struct btrfs_trans_handle *	trans,
		struct btrfs_root *	root,
		struct btrfs_ordered_sum *	sums
	)

Definition at line 668 of file file-item.c.

int btrfs_csum_one_bio	(	struct btrfs_root *	root,
		struct inode *	inode,
		struct bio *	bio,
		u64	file_start,
		int	contig
	)

Definition at line 407 of file file-item.c.

int btrfs_del_csums	(	struct btrfs_trans_handle *	trans,
		struct btrfs_root *	root,
		u64	bytenr,
		u64	len
	)

Definition at line 551 of file file-item.c.

int btrfs_insert_file_extent	(	struct btrfs_trans_handle *	trans,
		struct btrfs_root *	root,
		u64	objectid,
		u64	pos,
		u64	disk_offset,
		u64	disk_num_bytes,
		u64	num_bytes,
		u64	offset,
		u64	ram_bytes,
		u8	compression,
		u8	encryption,
		u16	other_encoding
	)

Definition at line 40 of file file-item.c.

int btrfs_lookup_bio_sums	(	struct btrfs_root *	root,
		struct inode *	inode,
		struct bio *	bio,
		u32 *	dst
	)

Definition at line 269 of file file-item.c.

int btrfs_lookup_bio_sums_dio	(	struct btrfs_root *	root,
		struct inode *	inode,
		struct bio *	bio,
		u64	offset
	)

Definition at line 275 of file file-item.c.

struct btrfs_csum_item* btrfs_lookup_csum ( struct btrfs_trans_handle *  trans, struct btrfs_root *  root, struct btrfs_path *  path, u64  bytenr, int  cow  )

read

Definition at line 86 of file file-item.c.

int btrfs_lookup_csums_range	(	struct btrfs_root *	root,
		u64	start,
		u64	end,
		struct list_head *	list,
		int	search_commit
	)

Definition at line 281 of file file-item.c.

int btrfs_lookup_file_extent	(	struct btrfs_trans_handle *	trans,
		struct btrfs_root *	root,
		struct btrfs_path *	path,
		u64	objectid,
		u64	offset,
		int	mod
	)

Definition at line 137 of file file-item.c.