mirror of
https://github.com/versity/scoutfs.git
synced 2026-02-09 04:00:10 +00:00
c4f3c26343
Add a function for updating the value of a dirty item. Callers can use this to make changes without having to worry about failure. Signed-off-by: Zach Brown <zab@versity.com>
76 lines
3.1 KiB
C
76 lines
3.1 KiB
C
#ifndef _SCOUTFS_ITEM_H_
|
|
#define _SCOUTFS_ITEM_H_
|
|
|
|
#include <linux/uio.h>
|
|
|
|
/* behavioural flags for the item functions */
|
|
enum {
|
|
SIF_EXCLUSIVE = (1 << 1),
|
|
SIF_REPLACE = (1 << 2),
|
|
};
|
|
|
|
struct scoutfs_segment;
|
|
struct scoutfs_key_buf;
|
|
|
|
int scoutfs_item_lookup(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct kvec *val, struct scoutfs_key_buf *end);
|
|
int scoutfs_item_lookup_exact(struct super_block *sb,
|
|
struct scoutfs_key_buf *key, struct kvec *val,
|
|
int size, struct scoutfs_key_buf *end);
|
|
int scoutfs_item_next(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct scoutfs_key_buf *last, struct kvec *val,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_next_same_min(struct super_block *sb,
|
|
struct scoutfs_key_buf *key,
|
|
struct scoutfs_key_buf *last,
|
|
struct kvec *val, int len,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_next_same(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct scoutfs_key_buf *last, struct kvec *val,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_create(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct kvec *val);
|
|
int scoutfs_item_dirty(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_update(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct kvec *val, struct scoutfs_key_buf *end);
|
|
void scoutfs_item_delete_dirty(struct super_block *sb,
|
|
struct scoutfs_key_buf *key);
|
|
void scoutfs_item_update_dirty(struct super_block *sb,
|
|
struct scoutfs_key_buf *key, struct kvec *val);
|
|
int scoutfs_item_delete(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
struct scoutfs_key_buf *end);
|
|
|
|
int scoutfs_item_add_batch(struct super_block *sb, struct list_head *list,
|
|
struct scoutfs_key_buf *key, struct kvec *val);
|
|
int scoutfs_item_insert_batch(struct super_block *sb, struct list_head *list,
|
|
struct scoutfs_key_buf *start,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_set_batch(struct super_block *sb, struct list_head *list,
|
|
struct scoutfs_key_buf *first,
|
|
struct scoutfs_key_buf *last, int sif,
|
|
struct scoutfs_key_buf *end);
|
|
void scoutfs_item_free_batch(struct super_block *sb, struct list_head *list);
|
|
|
|
bool scoutfs_item_has_dirty(struct super_block *sb);
|
|
bool scoutfs_item_dirty_fits_single(struct super_block *sb, u32 nr_items,
|
|
u32 key_bytes, u32 val_bytes);
|
|
int scoutfs_item_dirty_seg(struct super_block *sb, struct scoutfs_segment *seg);
|
|
int scoutfs_item_writeback(struct super_block *sb,
|
|
struct scoutfs_key_buf *start,
|
|
struct scoutfs_key_buf *end);
|
|
int scoutfs_item_invalidate(struct super_block *sb,
|
|
struct scoutfs_key_buf *start,
|
|
struct scoutfs_key_buf *end);
|
|
|
|
int scoutfs_item_copy_range_keys(struct super_block *sb,
|
|
struct scoutfs_key_buf *key, void *data,
|
|
unsigned len);
|
|
int scoutfs_item_copy_keys(struct super_block *sb, struct scoutfs_key_buf *key,
|
|
void *data, unsigned len);
|
|
|
|
int scoutfs_item_setup(struct super_block *sb);
|
|
void scoutfs_item_destroy(struct super_block *sb);
|
|
|
|
#endif
|