diff options
Diffstat (limited to 'fs/xfs/scrub/xfarray.h')
| -rw-r--r-- | fs/xfs/scrub/xfarray.h | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/fs/xfs/scrub/xfarray.h b/fs/xfs/scrub/xfarray.h index f70db5fb677a..d034ba9ca97f 100644 --- a/fs/xfs/scrub/xfarray.h +++ b/fs/xfs/scrub/xfarray.h @@ -38,13 +38,30 @@ static inline int xfarray_append(struct xfarray *array, void *ptr) uint64_t xfarray_length(struct xfarray *array); int xfarray_load_next(struct xfarray *array, uint64_t *idx, void *rec); +/* + * Iterate the non-null elements in a sparse xfarray. Callers should + * initialize *idx to zero before the first call; on return, it will be set to + * one more than the index of the record that was retrieved. Returns 1 if a + * record was retrieved, 0 if there weren't any more records, or a negative + * errno. + */ +static inline int +xfarray_iter( + struct xfarray *array, + uint64_t *idx, + void *rec) +{ + int ret = xfarray_load_next(array, idx, rec); + + if (ret == -ENODATA) + return 0; + if (ret == 0) + return 1; + return ret; +} + typedef int (*xfarray_cmp_fn)(const void *a, const void *b); int xfarray_sort(struct xfarray *array, xfarray_cmp_fn cmp_fn); -#define foreach_xfarray_item(array, i, rec) \ - for ((i) = 0; (i) < xfarray_length((array)); (i)++) \ - if (xfarray_load((array), (i), &(rec)) == 0 && \ - !xfarray_is_null((array), &(rec))) - #endif /* __XFS_SCRUB_XFARRAY_H__ */ |