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xfs: create iterator error codes

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Currently, xfs doesn't have generic error codes defined for "stop
iterating"; we just reuse the XFS_BTREE_QUERY_* return values.  This
looks a little weird if we're not actually iterating a btree index.
Before we start adding more iterators, we should create general
XFS_ITER_{CONTINUE,ABORT} return values and define the XFS_BTREE_QUERY_*
ones from that.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong 2019-07-02 09:39:38 -07:00
parent 73d30d4874
commit 5bb46e3e18
6 changed files with 14 additions and 8 deletions
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2
fs/xfs/libxfs/xfs_alloc.c
View File

@ -3137,7 +3137,7 @@ xfs_alloc_has_record(
/*
* Walk all the blocks in the AGFL. The @walk_fn can return any negative
* error code or XFS_BTREE_QUERY_RANGE_ABORT.
* error code or XFS_ITER_*.
*/
int
xfs_agfl_walk(

4
fs/xfs/libxfs/xfs_btree.h
View File

@ -465,8 +465,8 @@ uint xfs_btree_compute_maxlevels(uint *limits, unsigned long len);
unsigned long long xfs_btree_calc_size(uint *limits, unsigned long long len);
/* return codes */
#define XFS_BTREE_QUERY_RANGE_CONTINUE 0 /* keep iterating */
#define XFS_BTREE_QUERY_RANGE_ABORT 1 /* stop iterating */
#define XFS_BTREE_QUERY_RANGE_CONTINUE (XFS_ITER_CONTINUE) /* keep iterating */
#define XFS_BTREE_QUERY_RANGE_ABORT (XFS_ITER_ABORT) /* stop iterating */
typedef int (*xfs_btree_query_range_fn)(struct xfs_btree_cur *cur,
union xfs_btree_rec *rec, void *priv);

6
fs/xfs/libxfs/xfs_shared.h
View File

@ -177,4 +177,10 @@ struct xfs_ino_geometry {
unsigned int agino_log; /* #bits for agino in inum */
};
/* Keep iterating the data structure. */
#define XFS_ITER_CONTINUE (0)
/* Stop iterating the data structure. */
#define XFS_ITER_ABORT (1)
#endif /* __XFS_SHARED_H__ */

4
fs/xfs/scrub/agheader.c
View File

@ -639,7 +639,7 @@ xchk_agfl_block(
xchk_agfl_block_xref(sc, agbno);
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return XFS_BTREE_QUERY_RANGE_ABORT;
return XFS_ITER_ABORT;
return 0;
}
@ -730,7 +730,7 @@ xchk_agfl(
/* Check the blocks in the AGFL. */
error = xfs_agfl_walk(sc->mp, XFS_BUF_TO_AGF(sc->sa.agf_bp),
sc->sa.agfl_bp, xchk_agfl_block, &sai);
if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
if (error == XFS_ITER_ABORT) {
error = 0;
goto out_free;
}

4
fs/xfs/scrub/repair.c
View File

@ -664,7 +664,7 @@ xrep_findroot_agfl_walk(
{
xfs_agblock_t *agbno = priv;
return (*agbno == bno) ? XFS_BTREE_QUERY_RANGE_ABORT : 0;
return (*agbno == bno) ? XFS_ITER_ABORT : 0;
}
/* Does this block match the btree information passed in? */
@ -694,7 +694,7 @@ xrep_findroot_block(
if (owner == XFS_RMAP_OWN_AG) {
error = xfs_agfl_walk(mp, ri->agf, ri->agfl_bp,
xrep_findroot_agfl_walk, &agbno);
if (error == XFS_BTREE_QUERY_RANGE_ABORT)
if (error == XFS_ITER_ABORT)
return 0;
if (error)
return error;

2
fs/xfs/xfs_dquot.c
View File

@ -1239,7 +1239,7 @@ xfs_qm_exit(void)
/*
* Iterate every dquot of a particular type. The caller must ensure that the
* particular quota type is active. iter_fn can return negative error codes,
* or XFS_BTREE_QUERY_RANGE_ABORT to indicate that it wants to stop iterating.
* or XFS_ITER_ABORT to indicate that it wants to stop iterating.
*/
int
xfs_qm_dqiterate(