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xfs: cleanup xfs_bmap.h

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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 2011-09-18 20:41:07 +00:00 committed by Alex Elder
parent b0eab14e74
commit d952e2f812
1 changed files with 33 additions and 192 deletions
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223
fs/xfs/xfs_bmap.h
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@ -155,121 +155,29 @@ typedef struct xfs_bmalloca {
{ BMAP_RIGHT_FILLING, "RF" }, \ { BMAP_RIGHT_FILLING, "RF" }, \
{ BMAP_ATTRFORK, "ATTR" } { BMAP_ATTRFORK, "ATTR" }
/*
* Add bmap trace insert entries for all the contents of the extent list.
*
* Quite excessive tracing. Only do this for debug builds.
*/
#if defined(__KERNEL) && defined(DEBUG) #if defined(__KERNEL) && defined(DEBUG)
void void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt,
xfs_bmap_trace_exlist( int whichfork, unsigned long caller_ip);
struct xfs_inode *ip, /* incore inode pointer */
xfs_extnum_t cnt, /* count of entries in list */
int whichfork,
unsigned long caller_ip); /* data or attr fork */
#define XFS_BMAP_TRACE_EXLIST(ip,c,w) \ #define XFS_BMAP_TRACE_EXLIST(ip,c,w) \
xfs_bmap_trace_exlist(ip,c,w, _THIS_IP_) xfs_bmap_trace_exlist(ip,c,w, _THIS_IP_)
#else #else
#define XFS_BMAP_TRACE_EXLIST(ip,c,w) #define XFS_BMAP_TRACE_EXLIST(ip,c,w)
#endif #endif
/* int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd);
* Convert inode from non-attributed to attributed. void xfs_bmap_add_free(xfs_fsblock_t bno, xfs_filblks_t len,
* Must not be in a transaction, ip must not be locked. struct xfs_bmap_free *flist, struct xfs_mount *mp);
*/ void xfs_bmap_cancel(struct xfs_bmap_free *flist);
int /* error code */ void xfs_bmap_compute_maxlevels(struct xfs_mount *mp, int whichfork);
xfs_bmap_add_attrfork( int xfs_bmap_first_unused(struct xfs_trans *tp, struct xfs_inode *ip,
struct xfs_inode *ip, /* incore inode pointer */ xfs_extlen_t len, xfs_fileoff_t *unused, int whichfork);
int size, /* space needed for new attribute */ int xfs_bmap_last_before(struct xfs_trans *tp, struct xfs_inode *ip,
int rsvd); /* flag for reserved block allocation */ xfs_fileoff_t *last_block, int whichfork);
int xfs_bmap_last_offset(struct xfs_trans *tp, struct xfs_inode *ip,
/* xfs_fileoff_t *unused, int whichfork);
* Add the extent to the list of extents to be free at transaction end. int xfs_bmap_one_block(struct xfs_inode *ip, int whichfork);
* The list is maintained sorted (by block number). int xfs_bmap_read_extents(struct xfs_trans *tp, struct xfs_inode *ip,
*/ int whichfork);
void
xfs_bmap_add_free(
xfs_fsblock_t bno, /* fs block number of extent */
xfs_filblks_t len, /* length of extent */
xfs_bmap_free_t *flist, /* list of extents */
struct xfs_mount *mp); /* mount point structure */
/*
* Routine to clean up the free list data structure when
* an error occurs during a transaction.
*/
void
xfs_bmap_cancel(
xfs_bmap_free_t *flist); /* free list to clean up */
/*
* Compute and fill in the value of the maximum depth of a bmap btree
* in this filesystem. Done once, during mount.
*/
void
xfs_bmap_compute_maxlevels(
struct xfs_mount *mp, /* file system mount structure */
int whichfork); /* data or attr fork */
/*
* Returns the file-relative block number of the first unused block in the file.
* This is the lowest-address hole if the file has holes, else the first block
* past the end of file.
*/
int /* error */
xfs_bmap_first_unused(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
xfs_extlen_t len, /* size of hole to find */
xfs_fileoff_t *unused, /* unused block num */
int whichfork); /* data or attr fork */
/*
* Returns the file-relative block number of the last block + 1 before
* last_block (input value) in the file.
* This is not based on i_size, it is based on the extent list.
* Returns 0 for local files, as they do not have an extent list.
*/
int /* error */
xfs_bmap_last_before(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
xfs_fileoff_t *last_block, /* last block */
int whichfork); /* data or attr fork */
/*
* Returns the file-relative block number of the first block past eof in
* the file. This is not based on i_size, it is based on the extent list.
* Returns 0 for local files, as they do not have an extent list.
*/
int /* error */
xfs_bmap_last_offset(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
xfs_fileoff_t *unused, /* last block num */
int whichfork); /* data or attr fork */
/*
* Returns whether the selected fork of the inode has exactly one
* block or not. For the data fork we check this matches di_size,
* implying the file's range is 0..bsize-1.
*/
int
xfs_bmap_one_block(
struct xfs_inode *ip, /* incore inode */
int whichfork); /* data or attr fork */
/*
* Read in the extents to iu_extents.
* All inode fields are set up by caller, we just traverse the btree
* and copy the records in.
*/
int /* error */
xfs_bmap_read_extents(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
int whichfork); /* data or attr fork */
int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno, int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno,
xfs_filblks_t len, struct xfs_bmbt_irec *mval, xfs_filblks_t len, struct xfs_bmbt_irec *mval,
int *nmap, int flags); int *nmap, int flags);
@ -281,95 +189,28 @@ int xfs_bmapi_write(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fsblock_t *firstblock, xfs_extlen_t total, xfs_fsblock_t *firstblock, xfs_extlen_t total,
struct xfs_bmbt_irec *mval, int *nmap, struct xfs_bmbt_irec *mval, int *nmap,
struct xfs_bmap_free *flist); struct xfs_bmap_free *flist);
int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip,
/* xfs_fileoff_t bno, xfs_filblks_t len, int flags,
* Unmap (remove) blocks from a file. xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
* If nexts is nonzero then the number of extents to remove is limited to struct xfs_bmap_free *flist, int *done);
* that value. If not all extents in the block range can be removed then int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx,
* *done is set.
*/
int /* error */
xfs_bunmapi(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
xfs_fileoff_t bno, /* starting offset to unmap */
xfs_filblks_t len, /* length to unmap in file */
int flags, /* XFS_BMAPI_... */
xfs_extnum_t nexts, /* number of extents max */
xfs_fsblock_t *firstblock, /* first allocated block
controls a.g. for allocs */
xfs_bmap_free_t *flist, /* i/o: list extents to free */
int *done); /* set if not done yet */
/*
* Check an extent list, which has just been read, for
* any bit in the extent flag field.
*/
int
xfs_check_nostate_extents(
struct xfs_ifork *ifp,
xfs_extnum_t idx,
xfs_extnum_t num); xfs_extnum_t num);
uint xfs_default_attroffset(struct xfs_inode *ip);
uint
xfs_default_attroffset(
struct xfs_inode *ip);
#ifdef __KERNEL__ #ifdef __KERNEL__
/*
* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
* caller. Frees all the extents that need freeing, which must be done
* last due to locking considerations.
*
* Return 1 if the given transaction was committed and a new one allocated,
* and 0 otherwise.
*/
int /* error */
xfs_bmap_finish(
struct xfs_trans **tp, /* transaction pointer addr */
xfs_bmap_free_t *flist, /* i/o: list extents to free */
int *committed); /* xact committed or not */
/* bmap to userspace formatter - copy to user & advance pointer */ /* bmap to userspace formatter - copy to user & advance pointer */
typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *);
/* int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist,
* Get inode's extents as described in bmv, and format for output. int *committed);
*/ int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
int /* error code */ xfs_bmap_format_t formatter, void *arg);
xfs_getbmap( int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
xfs_inode_t *ip, int whichfork, int *eof);
struct getbmapx *bmv, /* user bmap structure */ int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_bmap_format_t formatter, /* format to user */ int whichfork, int *count);
void *arg); /* formatter arg */ int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
xfs_fileoff_t start_fsb, xfs_fileoff_t length);
/*
* Check if the endoff is outside the last extent. If so the caller will grow
* the allocation to a stripe unit boundary
*/
int
xfs_bmap_eof(
struct xfs_inode *ip,
xfs_fileoff_t endoff,
int whichfork,
int *eof);
/*
* Count fsblocks of the given fork.
*/
int
xfs_bmap_count_blocks(
xfs_trans_t *tp,
struct xfs_inode *ip,
int whichfork,
int *count);
int
xfs_bmap_punch_delalloc_range(
struct xfs_inode *ip,
xfs_fileoff_t start_fsb,
xfs_fileoff_t length);
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */
#endif /* __XFS_BMAP_H__ */ #endif /* __XFS_BMAP_H__ */