// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. * All Rights Reserved. */ #ifndef __XFS_RTBITMAP_H__ #define __XFS_RTBITMAP_H__ struct xfs_rtalloc_args { … }; static inline xfs_rtblock_t xfs_rtx_to_rtb( struct xfs_mount *mp, xfs_rtxnum_t rtx) { … } static inline xfs_extlen_t xfs_rtxlen_to_extlen( struct xfs_mount *mp, xfs_rtxlen_t rtxlen) { … } /* Compute the misalignment between an extent length and a realtime extent .*/ static inline unsigned int xfs_extlen_to_rtxmod( struct xfs_mount *mp, xfs_extlen_t len) { … } static inline xfs_rtxlen_t xfs_extlen_to_rtxlen( struct xfs_mount *mp, xfs_extlen_t len) { … } /* Convert an rt block number into an rt extent number. */ static inline xfs_rtxnum_t xfs_rtb_to_rtx( struct xfs_mount *mp, xfs_rtblock_t rtbno) { … } /* Return the offset of an rt block number within an rt extent. */ static inline xfs_extlen_t xfs_rtb_to_rtxoff( struct xfs_mount *mp, xfs_rtblock_t rtbno) { … } /* * Crack an rt block number into an rt extent number and an offset within that * rt extent. Returns the rt extent number directly and the offset in @off. */ static inline xfs_rtxnum_t xfs_rtb_to_rtxrem( struct xfs_mount *mp, xfs_rtblock_t rtbno, xfs_extlen_t *off) { … } /* * Convert an rt block number into an rt extent number, rounding up to the next * rt extent if the rt block is not aligned to an rt extent boundary. */ static inline xfs_rtxnum_t xfs_rtb_to_rtxup( struct xfs_mount *mp, xfs_rtblock_t rtbno) { … } /* Round this rtblock up to the nearest rt extent size. */ static inline xfs_rtblock_t xfs_rtb_roundup_rtx( struct xfs_mount *mp, xfs_rtblock_t rtbno) { … } /* Round this rtblock down to the nearest rt extent size. */ static inline xfs_rtblock_t xfs_rtb_rounddown_rtx( struct xfs_mount *mp, xfs_rtblock_t rtbno) { … } /* Convert an rt extent number to a file block offset in the rt bitmap file. */ static inline xfs_fileoff_t xfs_rtx_to_rbmblock( struct xfs_mount *mp, xfs_rtxnum_t rtx) { … } /* Convert an rt extent number to a word offset within an rt bitmap block. */ static inline unsigned int xfs_rtx_to_rbmword( struct xfs_mount *mp, xfs_rtxnum_t rtx) { … } /* Convert a file block offset in the rt bitmap file to an rt extent number. */ static inline xfs_rtxnum_t xfs_rbmblock_to_rtx( struct xfs_mount *mp, xfs_fileoff_t rbmoff) { … } /* Return a pointer to a bitmap word within a rt bitmap block. */ static inline union xfs_rtword_raw * xfs_rbmblock_wordptr( struct xfs_rtalloc_args *args, unsigned int index) { … } /* Convert an ondisk bitmap word to its incore representation. */ static inline xfs_rtword_t xfs_rtbitmap_getword( struct xfs_rtalloc_args *args, unsigned int index) { … } /* Set an ondisk bitmap word from an incore representation. */ static inline void xfs_rtbitmap_setword( struct xfs_rtalloc_args *args, unsigned int index, xfs_rtword_t value) { … } /* * Convert a rt extent length and rt bitmap block number to a xfs_suminfo_t * offset within the rt summary file. */ static inline xfs_rtsumoff_t xfs_rtsumoffs( struct xfs_mount *mp, int log2_len, xfs_fileoff_t rbmoff) { … } /* * Convert an xfs_suminfo_t offset to a file block offset within the rt summary * file. */ static inline xfs_fileoff_t xfs_rtsumoffs_to_block( struct xfs_mount *mp, xfs_rtsumoff_t rsumoff) { … } /* * Convert an xfs_suminfo_t offset to an info word offset within an rt summary * block. */ static inline unsigned int xfs_rtsumoffs_to_infoword( struct xfs_mount *mp, xfs_rtsumoff_t rsumoff) { … } /* Return a pointer to a summary info word within a rt summary block. */ static inline union xfs_suminfo_raw * xfs_rsumblock_infoptr( struct xfs_rtalloc_args *args, unsigned int index) { … } /* Get the current value of a summary counter. */ static inline xfs_suminfo_t xfs_suminfo_get( struct xfs_rtalloc_args *args, unsigned int index) { … } /* Add to the current value of a summary counter and return the new value. */ static inline xfs_suminfo_t xfs_suminfo_add( struct xfs_rtalloc_args *args, unsigned int index, int delta) { … } /* * Functions for walking free space rtextents in the realtime bitmap. */ struct xfs_rtalloc_rec { … }; xfs_rtalloc_query_range_fn; #ifdef CONFIG_XFS_RT void xfs_rtbuf_cache_relse(struct xfs_rtalloc_args *args); int xfs_rtbuf_get(struct xfs_rtalloc_args *args, xfs_fileoff_t block, int issum); static inline int xfs_rtbitmap_read_buf( struct xfs_rtalloc_args *args, xfs_fileoff_t block) { … } static inline int xfs_rtsummary_read_buf( struct xfs_rtalloc_args *args, xfs_fileoff_t block) { … } int xfs_rtcheck_range(struct xfs_rtalloc_args *args, xfs_rtxnum_t start, xfs_rtxlen_t len, int val, xfs_rtxnum_t *new, int *stat); int xfs_rtfind_back(struct xfs_rtalloc_args *args, xfs_rtxnum_t start, xfs_rtxnum_t limit, xfs_rtxnum_t *rtblock); int xfs_rtfind_forw(struct xfs_rtalloc_args *args, xfs_rtxnum_t start, xfs_rtxnum_t limit, xfs_rtxnum_t *rtblock); int xfs_rtmodify_range(struct xfs_rtalloc_args *args, xfs_rtxnum_t start, xfs_rtxlen_t len, int val); int xfs_rtget_summary(struct xfs_rtalloc_args *args, int log, xfs_fileoff_t bbno, xfs_suminfo_t *sum); int xfs_rtmodify_summary(struct xfs_rtalloc_args *args, int log, xfs_fileoff_t bbno, int delta); int xfs_rtfree_range(struct xfs_rtalloc_args *args, xfs_rtxnum_t start, xfs_rtxlen_t len); int xfs_rtalloc_query_range(struct xfs_mount *mp, struct xfs_trans *tp, const struct xfs_rtalloc_rec *low_rec, const struct xfs_rtalloc_rec *high_rec, xfs_rtalloc_query_range_fn fn, void *priv); int xfs_rtalloc_query_all(struct xfs_mount *mp, struct xfs_trans *tp, xfs_rtalloc_query_range_fn fn, void *priv); int xfs_rtalloc_extent_is_free(struct xfs_mount *mp, struct xfs_trans *tp, xfs_rtxnum_t start, xfs_rtxlen_t len, bool *is_free); /* * Free an extent in the realtime subvolume. Length is expressed in * realtime extents, as is the block number. */ int /* error */ xfs_rtfree_extent( struct xfs_trans *tp, /* transaction pointer */ xfs_rtxnum_t start, /* starting rtext number to free */ xfs_rtxlen_t len); /* length of extent freed */ /* Same as above, but in units of rt blocks. */ int xfs_rtfree_blocks(struct xfs_trans *tp, xfs_fsblock_t rtbno, xfs_filblks_t rtlen); xfs_filblks_t xfs_rtbitmap_blockcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents); unsigned long long xfs_rtbitmap_wordcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents); xfs_filblks_t xfs_rtsummary_blockcount(struct xfs_mount *mp, unsigned int rsumlevels, xfs_extlen_t rbmblocks); unsigned long long xfs_rtsummary_wordcount(struct xfs_mount *mp, unsigned int rsumlevels, xfs_extlen_t rbmblocks); void xfs_rtbitmap_lock(struct xfs_trans *tp, struct xfs_mount *mp); void xfs_rtbitmap_unlock(struct xfs_mount *mp); /* Lock the rt bitmap inode in shared mode */ #define XFS_RBMLOCK_BITMAP … /* Lock the rt summary inode in shared mode */ #define XFS_RBMLOCK_SUMMARY … void xfs_rtbitmap_lock_shared(struct xfs_mount *mp, unsigned int rbmlock_flags); void xfs_rtbitmap_unlock_shared(struct xfs_mount *mp, unsigned int rbmlock_flags); #else /* CONFIG_XFS_RT */ #define xfs_rtfree_extent … #define xfs_rtfree_blocks … #define xfs_rtalloc_query_range … #define xfs_rtalloc_query_all … #define xfs_rtbitmap_read_buf … #define xfs_rtsummary_read_buf … #define xfs_rtbuf_cache_relse … #define xfs_rtalloc_extent_is_free … static inline xfs_filblks_t xfs_rtbitmap_blockcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents) { /* shut up gcc */ return 0; } #define xfs_rtbitmap_wordcount … #define xfs_rtsummary_blockcount … #define xfs_rtsummary_wordcount … #define xfs_rtbitmap_lock … #define xfs_rtbitmap_unlock … #define xfs_rtbitmap_lock_shared … #define xfs_rtbitmap_unlock_shared … #endif /* CONFIG_XFS_RT */ #endif /* __XFS_RTBITMAP_H__ */
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