// 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 xfs_failaddr_t xfs_rmap_irec_offset_unpack( __u64 offset, struct xfs_rmap_irec *irec) { if (offset & ~(XFS_RMAP_OFF_MASK | XFS_RMAP_OFF_FLAGS)) return __this_address; 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 NULL; } 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; struct xfs_perag *ri_pag; }; void xfs_rmap_update_get_group(struct xfs_mount *mp, struct xfs_rmap_intent *ri); /* 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; 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_btree_cur *cur, 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 { /* Number of owner matches. */ unsigned long long matches; /* Number of non-owner matches. */ unsigned long long non_owner_matches; /* Number of non-owner matches that conflict with the owner matches. */ unsigned long long bad_non_owner_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); #endif /* __XFS_RMAP_H__ */