mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 16:41:58 +00:00
f541833c8e
These are more related to the inode item flags on disk than the in-memory btrfs_inode, move the helpers to inode-item.h. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef BTRFS_INODE_ITEM_H
|
|
#define BTRFS_INODE_ITEM_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct btrfs_trans_handle;
|
|
struct btrfs_root;
|
|
struct btrfs_path;
|
|
struct btrfs_key;
|
|
struct btrfs_inode_extref;
|
|
struct btrfs_inode;
|
|
struct extent_buffer;
|
|
|
|
/*
|
|
* Return this if we need to call truncate_block for the last bit of the
|
|
* truncate.
|
|
*/
|
|
#define BTRFS_NEED_TRUNCATE_BLOCK 1
|
|
|
|
struct btrfs_truncate_control {
|
|
/*
|
|
* IN: the inode we're operating on, this can be NULL if
|
|
* ->clear_extent_range is false.
|
|
*/
|
|
struct btrfs_inode *inode;
|
|
|
|
/* IN: the size we're truncating to. */
|
|
u64 new_size;
|
|
|
|
/* OUT: the number of extents truncated. */
|
|
u64 extents_found;
|
|
|
|
/* OUT: the last size we truncated this inode to. */
|
|
u64 last_size;
|
|
|
|
/* OUT: the number of bytes to sub from this inode. */
|
|
u64 sub_bytes;
|
|
|
|
/* IN: the ino we are truncating. */
|
|
u64 ino;
|
|
|
|
/*
|
|
* IN: minimum key type to remove. All key types with this type are
|
|
* removed only if their offset >= new_size.
|
|
*/
|
|
u32 min_type;
|
|
|
|
/*
|
|
* IN: true if we don't want to do extent reference updates for any file
|
|
* extents we drop.
|
|
*/
|
|
bool skip_ref_updates;
|
|
|
|
/*
|
|
* IN: true if we need to clear the file extent range for the inode as
|
|
* we drop the file extent items.
|
|
*/
|
|
bool clear_extent_range;
|
|
};
|
|
|
|
/*
|
|
* btrfs_inode_item stores flags in a u64, btrfs_inode stores them in two
|
|
* separate u32s. These two functions convert between the two representations.
|
|
*/
|
|
static inline u64 btrfs_inode_combine_flags(u32 flags, u32 ro_flags)
|
|
{
|
|
return (flags | ((u64)ro_flags << 32));
|
|
}
|
|
|
|
static inline void btrfs_inode_split_flags(u64 inode_item_flags,
|
|
u32 *flags, u32 *ro_flags)
|
|
{
|
|
*flags = (u32)inode_item_flags;
|
|
*ro_flags = (u32)(inode_item_flags >> 32);
|
|
}
|
|
|
|
int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_truncate_control *control);
|
|
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, const struct fscrypt_str *name,
|
|
u64 inode_objectid, u64 ref_objectid, u64 index);
|
|
int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, const struct fscrypt_str *name,
|
|
u64 inode_objectid, u64 ref_objectid, u64 *index);
|
|
int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_path *path, u64 objectid);
|
|
int btrfs_lookup_inode(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, struct btrfs_path *path,
|
|
struct btrfs_key *location, int mod);
|
|
|
|
struct btrfs_inode_extref *btrfs_lookup_inode_extref(
|
|
struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_path *path,
|
|
const struct fscrypt_str *name,
|
|
u64 inode_objectid, u64 ref_objectid, int ins_len,
|
|
int cow);
|
|
|
|
struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
|
|
int slot,
|
|
const struct fscrypt_str *name);
|
|
struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
|
|
struct extent_buffer *leaf, int slot, u64 ref_objectid,
|
|
const struct fscrypt_str *name);
|
|
|
|
#endif
|