xfs: cleanup xfs_bmap.h
Convert all function prototypes to the short form used elsewhere, and remove duplicates of comments already placed at the function body. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig
Alex Elder
parent
b0eab14e74
commit
d952e2f812
1 changed files with 33 additions and 192 deletions
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@ -155,121 +155,29 @@ typedef struct xfs_bmalloca {
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{ BMAP_RIGHT_FILLING, "RF" }, \
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{ BMAP_ATTRFORK, "ATTR" }
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/*
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* Add bmap trace insert entries for all the contents of the extent list.
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*
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* Quite excessive tracing. Only do this for debug builds.
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*/
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#if defined(__KERNEL) && defined(DEBUG)
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void
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xfs_bmap_trace_exlist(
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struct xfs_inode *ip, /* incore inode pointer */
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xfs_extnum_t cnt, /* count of entries in list */
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int whichfork,
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unsigned long caller_ip); /* data or attr fork */
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void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt,
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int whichfork, unsigned long caller_ip);
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#define XFS_BMAP_TRACE_EXLIST(ip,c,w) \
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xfs_bmap_trace_exlist(ip,c,w, _THIS_IP_)
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#else
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#define XFS_BMAP_TRACE_EXLIST(ip,c,w)
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#endif
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/*
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* Convert inode from non-attributed to attributed.
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* Must not be in a transaction, ip must not be locked.
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*/
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int /* error code */
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xfs_bmap_add_attrfork(
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struct xfs_inode *ip, /* incore inode pointer */
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int size, /* space needed for new attribute */
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int rsvd); /* flag for reserved block allocation */
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/*
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* Add the extent to the list of extents to be free at transaction end.
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* The list is maintained sorted (by block number).
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*/
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void
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xfs_bmap_add_free(
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xfs_fsblock_t bno, /* fs block number of extent */
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xfs_filblks_t len, /* length of extent */
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xfs_bmap_free_t *flist, /* list of extents */
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struct xfs_mount *mp); /* mount point structure */
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/*
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* Routine to clean up the free list data structure when
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* an error occurs during a transaction.
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*/
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void
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xfs_bmap_cancel(
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xfs_bmap_free_t *flist); /* free list to clean up */
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/*
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* Compute and fill in the value of the maximum depth of a bmap btree
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* in this filesystem. Done once, during mount.
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*/
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void
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xfs_bmap_compute_maxlevels(
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struct xfs_mount *mp, /* file system mount structure */
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int whichfork); /* data or attr fork */
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/*
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* Returns the file-relative block number of the first unused block in the file.
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* This is the lowest-address hole if the file has holes, else the first block
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* past the end of file.
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*/
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int /* error */
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xfs_bmap_first_unused(
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struct xfs_trans *tp, /* transaction pointer */
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struct xfs_inode *ip, /* incore inode */
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xfs_extlen_t len, /* size of hole to find */
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xfs_fileoff_t *unused, /* unused block num */
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int whichfork); /* data or attr fork */
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/*
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* Returns the file-relative block number of the last block + 1 before
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* last_block (input value) in the file.
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* This is not based on i_size, it is based on the extent list.
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* Returns 0 for local files, as they do not have an extent list.
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*/
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int /* error */
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xfs_bmap_last_before(
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struct xfs_trans *tp, /* transaction pointer */
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struct xfs_inode *ip, /* incore inode */
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xfs_fileoff_t *last_block, /* last block */
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int whichfork); /* data or attr fork */
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/*
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* Returns the file-relative block number of the first block past eof in
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* the file. This is not based on i_size, it is based on the extent list.
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* Returns 0 for local files, as they do not have an extent list.
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*/
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int /* error */
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xfs_bmap_last_offset(
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struct xfs_trans *tp, /* transaction pointer */
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struct xfs_inode *ip, /* incore inode */
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xfs_fileoff_t *unused, /* last block num */
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int whichfork); /* data or attr fork */
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/*
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* Returns whether the selected fork of the inode has exactly one
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* block or not. For the data fork we check this matches di_size,
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* implying the file's range is 0..bsize-1.
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*/
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int
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xfs_bmap_one_block(
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struct xfs_inode *ip, /* incore inode */
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int whichfork); /* data or attr fork */
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/*
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* Read in the extents to iu_extents.
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* All inode fields are set up by caller, we just traverse the btree
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* and copy the records in.
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*/
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int /* error */
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xfs_bmap_read_extents(
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struct xfs_trans *tp, /* transaction pointer */
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struct xfs_inode *ip, /* incore inode */
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int whichfork); /* data or attr fork */
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int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd);
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void xfs_bmap_add_free(xfs_fsblock_t bno, xfs_filblks_t len,
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struct xfs_bmap_free *flist, struct xfs_mount *mp);
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void xfs_bmap_cancel(struct xfs_bmap_free *flist);
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void xfs_bmap_compute_maxlevels(struct xfs_mount *mp, int whichfork);
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int xfs_bmap_first_unused(struct xfs_trans *tp, struct xfs_inode *ip,
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xfs_extlen_t len, xfs_fileoff_t *unused, int whichfork);
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int xfs_bmap_last_before(struct xfs_trans *tp, struct xfs_inode *ip,
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xfs_fileoff_t *last_block, int whichfork);
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int xfs_bmap_last_offset(struct xfs_trans *tp, struct xfs_inode *ip,
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xfs_fileoff_t *unused, int whichfork);
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int xfs_bmap_one_block(struct xfs_inode *ip, int whichfork);
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int xfs_bmap_read_extents(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork);
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int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno,
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xfs_filblks_t len, struct xfs_bmbt_irec *mval,
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int *nmap, int flags);
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@ -281,95 +189,28 @@ int xfs_bmapi_write(struct xfs_trans *tp, struct xfs_inode *ip,
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xfs_fsblock_t *firstblock, xfs_extlen_t total,
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struct xfs_bmbt_irec *mval, int *nmap,
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struct xfs_bmap_free *flist);
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/*
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* Unmap (remove) blocks from a file.
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* If nexts is nonzero then the number of extents to remove is limited to
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* that value. If not all extents in the block range can be removed then
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* *done is set.
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*/
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int /* error */
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xfs_bunmapi(
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struct xfs_trans *tp, /* transaction pointer */
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struct xfs_inode *ip, /* incore inode */
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xfs_fileoff_t bno, /* starting offset to unmap */
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xfs_filblks_t len, /* length to unmap in file */
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int flags, /* XFS_BMAPI_... */
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xfs_extnum_t nexts, /* number of extents max */
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xfs_fsblock_t *firstblock, /* first allocated block
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controls a.g. for allocs */
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xfs_bmap_free_t *flist, /* i/o: list extents to free */
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int *done); /* set if not done yet */
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/*
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* Check an extent list, which has just been read, for
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* any bit in the extent flag field.
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*/
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int
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xfs_check_nostate_extents(
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struct xfs_ifork *ifp,
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xfs_extnum_t idx,
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xfs_extnum_t num);
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uint
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xfs_default_attroffset(
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struct xfs_inode *ip);
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int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip,
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xfs_fileoff_t bno, xfs_filblks_t len, int flags,
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xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
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struct xfs_bmap_free *flist, int *done);
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int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx,
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xfs_extnum_t num);
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uint xfs_default_attroffset(struct xfs_inode *ip);
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#ifdef __KERNEL__
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/*
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* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
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* caller. Frees all the extents that need freeing, which must be done
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* last due to locking considerations.
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*
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* Return 1 if the given transaction was committed and a new one allocated,
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* and 0 otherwise.
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*/
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int /* error */
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xfs_bmap_finish(
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struct xfs_trans **tp, /* transaction pointer addr */
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xfs_bmap_free_t *flist, /* i/o: list extents to free */
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int *committed); /* xact committed or not */
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/* bmap to userspace formatter - copy to user & advance pointer */
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typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *);
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/*
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* Get inode's extents as described in bmv, and format for output.
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*/
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int /* error code */
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xfs_getbmap(
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xfs_inode_t *ip,
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struct getbmapx *bmv, /* user bmap structure */
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xfs_bmap_format_t formatter, /* format to user */
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void *arg); /* formatter arg */
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/*
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* Check if the endoff is outside the last extent. If so the caller will grow
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* the allocation to a stripe unit boundary
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*/
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int
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xfs_bmap_eof(
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struct xfs_inode *ip,
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xfs_fileoff_t endoff,
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int whichfork,
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int *eof);
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/*
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* Count fsblocks of the given fork.
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*/
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int
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xfs_bmap_count_blocks(
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xfs_trans_t *tp,
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struct xfs_inode *ip,
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int whichfork,
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int *count);
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int
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xfs_bmap_punch_delalloc_range(
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struct xfs_inode *ip,
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xfs_fileoff_t start_fsb,
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xfs_fileoff_t length);
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int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist,
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int *committed);
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int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
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xfs_bmap_format_t formatter, void *arg);
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int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
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int whichfork, int *eof);
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int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork, int *count);
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int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
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xfs_fileoff_t start_fsb, xfs_fileoff_t length);
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#endif /* __KERNEL__ */
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#endif /* __XFS_BMAP_H__ */
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