// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2016 Oracle. All Rights Reserved. * Author: Darrick J. Wong <[email protected]> */ #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) { … } static inline void xfs_rmap_ino_owner( struct xfs_owner_info *oi, xfs_ino_t ino, int whichfork, xfs_fileoff_t offset) { … } static inline bool xfs_rmap_should_skip_owner_update( const struct xfs_owner_info *oi) { … } /* Reverse mapping functions. */ struct xfs_buf; static inline __u64 xfs_rmap_irec_offset_pack( const struct xfs_rmap_irec *irec) { … } static inline xfs_failaddr_t xfs_rmap_irec_offset_unpack( __u64 offset, struct xfs_rmap_irec *irec) { … } static inline void xfs_owner_info_unpack( const struct xfs_owner_info *oinfo, uint64_t *owner, uint64_t *offset, unsigned int *flags) { … } static inline void xfs_owner_info_pack( struct xfs_owner_info *oinfo, uint64_t owner, uint64_t offset, unsigned int flags) { … } 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); xfs_rmap_query_range_fn; 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 { … }; #define XFS_RMAP_INTENT_STRINGS … struct xfs_rmap_intent { … }; /* 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); int xfs_rmap_finish_one(struct xfs_trans *tp, struct xfs_rmap_intent *ri, struct xfs_btree_cur **pcur); int __xfs_rmap_finish_intent(struct xfs_btree_cur *rcur, enum xfs_rmap_intent_type op, xfs_agblock_t bno, xfs_extlen_t len, const struct xfs_owner_info *oinfo, bool unwritten); 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); xfs_btree_rec; xfs_failaddr_t xfs_rmap_btrec_to_irec(const union xfs_btree_rec *rec, struct xfs_rmap_irec *irec); xfs_failaddr_t xfs_rmap_check_irec(struct xfs_perag *pag, const struct xfs_rmap_irec *irec); int xfs_rmap_has_records(struct xfs_btree_cur *cur, xfs_agblock_t bno, xfs_extlen_t len, enum xbtree_recpacking *outcome); struct xfs_rmap_matches { … }; int xfs_rmap_count_owners(struct xfs_btree_cur *cur, xfs_agblock_t bno, xfs_extlen_t len, const struct xfs_owner_info *oinfo, struct xfs_rmap_matches *rmatch); 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_other); 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); /* * Parameters for tracking reverse mapping changes. The hook function arg * parameter is enum xfs_rmap_intent_type, and the rest is below. */ struct xfs_rmap_update_params { … }; #ifdef CONFIG_XFS_LIVE_HOOKS struct xfs_rmap_hook { … }; void xfs_rmap_hook_disable(void); void xfs_rmap_hook_enable(void); int xfs_rmap_hook_add(struct xfs_perag *pag, struct xfs_rmap_hook *hook); void xfs_rmap_hook_del(struct xfs_perag *pag, struct xfs_rmap_hook *hook); void xfs_rmap_hook_setup(struct xfs_rmap_hook *hook, notifier_fn_t mod_fn); #endif #endif /* __XFS_RMAP_H__ */
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