219 lines
6.5 KiB
C
219 lines
6.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2016 Oracle. All Rights Reserved.
|
||
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
||
|
|
*/
|
||
|
|
#ifndef __XFS_RMAP_H__
|
||
|
|
#define __XFS_RMAP_H__
|
||
|
|
|
||
|
|
struct xfs_perag;
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
xfs_rmap_ino_bmbt_owner(
|
||
|
|
struct xfs_owner_info *oi,
|
||
|
|
xfs_ino_t ino,
|
||
|
|
int whichfork)
|
||
|
|
{
|
||
|
|
oi->oi_owner = ino;
|
||
|
|
oi->oi_offset = 0;
|
||
|
|
oi->oi_flags = XFS_OWNER_INFO_BMBT_BLOCK;
|
||
|
|
if (whichfork == XFS_ATTR_FORK)
|
||
|
|
oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
xfs_rmap_ino_owner(
|
||
|
|
struct xfs_owner_info *oi,
|
||
|
|
xfs_ino_t ino,
|
||
|
|
int whichfork,
|
||
|
|
xfs_fileoff_t offset)
|
||
|
|
{
|
||
|
|
oi->oi_owner = ino;
|
||
|
|
oi->oi_offset = offset;
|
||
|
|
oi->oi_flags = 0;
|
||
|
|
if (whichfork == XFS_ATTR_FORK)
|
||
|
|
oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
xfs_rmap_should_skip_owner_update(
|
||
|
|
const struct xfs_owner_info *oi)
|
||
|
|
{
|
||
|
|
return oi->oi_owner == XFS_RMAP_OWN_NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Reverse mapping functions. */
|
||
|
|
|
||
|
|
struct xfs_buf;
|
||
|
|
|
||
|
|
static inline __u64
|
||
|
|
xfs_rmap_irec_offset_pack(
|
||
|
|
const struct xfs_rmap_irec *irec)
|
||
|
|
{
|
||
|
|
__u64 x;
|
||
|
|
|
||
|
|
x = XFS_RMAP_OFF(irec->rm_offset);
|
||
|
|
if (irec->rm_flags & XFS_RMAP_ATTR_FORK)
|
||
|
|
x |= XFS_RMAP_OFF_ATTR_FORK;
|
||
|
|
if (irec->rm_flags & XFS_RMAP_BMBT_BLOCK)
|
||
|
|
x |= XFS_RMAP_OFF_BMBT_BLOCK;
|
||
|
|
if (irec->rm_flags & XFS_RMAP_UNWRITTEN)
|
||
|
|
x |= XFS_RMAP_OFF_UNWRITTEN;
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
xfs_rmap_irec_offset_unpack(
|
||
|
|
__u64 offset,
|
||
|
|
struct xfs_rmap_irec *irec)
|
||
|
|
{
|
||
|
|
if (offset & ~(XFS_RMAP_OFF_MASK | XFS_RMAP_OFF_FLAGS))
|
||
|
|
return -EFSCORRUPTED;
|
||
|
|
irec->rm_offset = XFS_RMAP_OFF(offset);
|
||
|
|
irec->rm_flags = 0;
|
||
|
|
if (offset & XFS_RMAP_OFF_ATTR_FORK)
|
||
|
|
irec->rm_flags |= XFS_RMAP_ATTR_FORK;
|
||
|
|
if (offset & XFS_RMAP_OFF_BMBT_BLOCK)
|
||
|
|
irec->rm_flags |= XFS_RMAP_BMBT_BLOCK;
|
||
|
|
if (offset & XFS_RMAP_OFF_UNWRITTEN)
|
||
|
|
irec->rm_flags |= XFS_RMAP_UNWRITTEN;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
xfs_owner_info_unpack(
|
||
|
|
const struct xfs_owner_info *oinfo,
|
||
|
|
uint64_t *owner,
|
||
|
|
uint64_t *offset,
|
||
|
|
unsigned int *flags)
|
||
|
|
{
|
||
|
|
unsigned int r = 0;
|
||
|
|
|
||
|
|
*owner = oinfo->oi_owner;
|
||
|
|
*offset = oinfo->oi_offset;
|
||
|
|
if (oinfo->oi_flags & XFS_OWNER_INFO_ATTR_FORK)
|
||
|
|
r |= XFS_RMAP_ATTR_FORK;
|
||
|
|
if (oinfo->oi_flags & XFS_OWNER_INFO_BMBT_BLOCK)
|
||
|
|
r |= XFS_RMAP_BMBT_BLOCK;
|
||
|
|
*flags = r;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
xfs_owner_info_pack(
|
||
|
|
struct xfs_owner_info *oinfo,
|
||
|
|
uint64_t owner,
|
||
|
|
uint64_t offset,
|
||
|
|
unsigned int flags)
|
||
|
|
{
|
||
|
|
oinfo->oi_owner = owner;
|
||
|
|
oinfo->oi_offset = XFS_RMAP_OFF(offset);
|
||
|
|
oinfo->oi_flags = 0;
|
||
|
|
if (flags & XFS_RMAP_ATTR_FORK)
|
||
|
|
oinfo->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
|
||
|
|
if (flags & XFS_RMAP_BMBT_BLOCK)
|
||
|
|
oinfo->oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp,
|
||
|
|
struct xfs_perag *pag, xfs_agblock_t bno, xfs_extlen_t len,
|
||
|
|
const struct xfs_owner_info *oinfo);
|
||
|
|
int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp,
|
||
|
|
struct xfs_perag *pag, xfs_agblock_t bno, xfs_extlen_t len,
|
||
|
|
const struct xfs_owner_info *oinfo);
|
||
|
|
|
||
|
|
int xfs_rmap_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
uint64_t owner, uint64_t offset, unsigned int flags,
|
||
|
|
struct xfs_rmap_irec *irec, int *stat);
|
||
|
|
int xfs_rmap_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len, uint64_t owner, uint64_t offset,
|
||
|
|
unsigned int flags, int *stat);
|
||
|
|
int xfs_rmap_insert(struct xfs_btree_cur *rcur, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len, uint64_t owner, uint64_t offset,
|
||
|
|
unsigned int flags);
|
||
|
|
int xfs_rmap_get_rec(struct xfs_btree_cur *cur, struct xfs_rmap_irec *irec,
|
||
|
|
int *stat);
|
||
|
|
|
||
|
|
typedef int (*xfs_rmap_query_range_fn)(
|
||
|
|
struct xfs_btree_cur *cur,
|
||
|
|
const struct xfs_rmap_irec *rec,
|
||
|
|
void *priv);
|
||
|
|
|
||
|
|
int xfs_rmap_query_range(struct xfs_btree_cur *cur,
|
||
|
|
const struct xfs_rmap_irec *low_rec,
|
||
|
|
const struct xfs_rmap_irec *high_rec,
|
||
|
|
xfs_rmap_query_range_fn fn, void *priv);
|
||
|
|
int xfs_rmap_query_all(struct xfs_btree_cur *cur, xfs_rmap_query_range_fn fn,
|
||
|
|
void *priv);
|
||
|
|
|
||
|
|
enum xfs_rmap_intent_type {
|
||
|
|
XFS_RMAP_MAP,
|
||
|
|
XFS_RMAP_MAP_SHARED,
|
||
|
|
XFS_RMAP_UNMAP,
|
||
|
|
XFS_RMAP_UNMAP_SHARED,
|
||
|
|
XFS_RMAP_CONVERT,
|
||
|
|
XFS_RMAP_CONVERT_SHARED,
|
||
|
|
XFS_RMAP_ALLOC,
|
||
|
|
XFS_RMAP_FREE,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct xfs_rmap_intent {
|
||
|
|
struct list_head ri_list;
|
||
|
|
enum xfs_rmap_intent_type ri_type;
|
||
|
|
int ri_whichfork;
|
||
|
|
uint64_t ri_owner;
|
||
|
|
struct xfs_bmbt_irec ri_bmap;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* functions for updating the rmapbt based on bmbt map/unmap operations */
|
||
|
|
void xfs_rmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
|
||
|
|
int whichfork, struct xfs_bmbt_irec *imap);
|
||
|
|
void xfs_rmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
|
||
|
|
int whichfork, struct xfs_bmbt_irec *imap);
|
||
|
|
void xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_trans *tp,
|
||
|
|
struct xfs_inode *ip, int whichfork,
|
||
|
|
struct xfs_bmbt_irec *imap);
|
||
|
|
void xfs_rmap_alloc_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
|
||
|
|
xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
|
||
|
|
void xfs_rmap_free_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
|
||
|
|
xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
|
||
|
|
|
||
|
|
void xfs_rmap_finish_one_cleanup(struct xfs_trans *tp,
|
||
|
|
struct xfs_btree_cur *rcur, int error);
|
||
|
|
int xfs_rmap_finish_one(struct xfs_trans *tp, struct xfs_rmap_intent *ri,
|
||
|
|
struct xfs_btree_cur **pcur);
|
||
|
|
|
||
|
|
int xfs_rmap_lookup_le_range(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
uint64_t owner, uint64_t offset, unsigned int flags,
|
||
|
|
struct xfs_rmap_irec *irec, int *stat);
|
||
|
|
int xfs_rmap_compare(const struct xfs_rmap_irec *a,
|
||
|
|
const struct xfs_rmap_irec *b);
|
||
|
|
union xfs_btree_rec;
|
||
|
|
int xfs_rmap_btrec_to_irec(const union xfs_btree_rec *rec,
|
||
|
|
struct xfs_rmap_irec *irec);
|
||
|
|
int xfs_rmap_has_record(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len, bool *exists);
|
||
|
|
int xfs_rmap_record_exists(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len, const struct xfs_owner_info *oinfo,
|
||
|
|
bool *has_rmap);
|
||
|
|
int xfs_rmap_has_other_keys(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len, const struct xfs_owner_info *oinfo,
|
||
|
|
bool *has_rmap);
|
||
|
|
int xfs_rmap_map_raw(struct xfs_btree_cur *cur, struct xfs_rmap_irec *rmap);
|
||
|
|
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_SKIP_UPDATE;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_ANY_OWNER;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_FS;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_LOG;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_AG;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_INOBT;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_INODES;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_REFC;
|
||
|
|
extern const struct xfs_owner_info XFS_RMAP_OINFO_COW;
|
||
|
|
|
||
|
|
extern struct kmem_cache *xfs_rmap_intent_cache;
|
||
|
|
|
||
|
|
int __init xfs_rmap_intent_init_cache(void);
|
||
|
|
void xfs_rmap_intent_destroy_cache(void);
|
||
|
|
|
||
|
|
#endif /* __XFS_RMAP_H__ */
|