mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
f8c44673e5
To prepare for further bio submission changes btrfs_csum_one_bio should be able to take all it's arguments from the btrfs_bio structure. It can always use the bbio->inode already, and once the compression code is updated to set ->file_offset that one can be used unconditionally as well instead of looking at the page mapping now that btrfs doesn't allow ordered extents to span discontiguous data ranges. The only slightly tricky bit is the one_ordered flag set by the compressed writes. Replace that one with the driver private bio flag, which gets cleared before the bio is handed off to the block layer so that we don't get in the way of driver use. Note: this leaves an argument and a flag to btrfs_wq_submit_bio unused. But that whole mechanism will be removed in its current form in the next patch. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/* 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);
|
|
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, 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
|