@@ -2875,3 +2875,45 @@ xfs_free_extent(
xfs_trans_brelse(tp, agbp);
return error;
}
+
+struct xfs_alloc_query_range_info {
+ xfs_alloc_query_range_fn fn;
+ void *priv;
+};
+
+/* Format btree record and pass to our callback. */
+STATIC int
+xfs_alloc_query_range_helper(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_rec *rec,
+ void *priv)
+{
+ struct xfs_alloc_query_range_info *query = priv;
+ struct xfs_alloc_rec_incore irec;
+
+ irec.ar_startblock = be32_to_cpu(rec->alloc.ar_startblock);
+ irec.ar_blockcount = be32_to_cpu(rec->alloc.ar_blockcount);
+ return query->fn(cur, &irec, query->priv);
+}
+
+/* Find all free space within a given range of blocks. */
+int
+xfs_alloc_query_range(
+ struct xfs_btree_cur *cur,
+ struct xfs_alloc_rec_incore *low_rec,
+ struct xfs_alloc_rec_incore *high_rec,
+ xfs_alloc_query_range_fn fn,
+ void *priv)
+{
+ union xfs_btree_irec low_brec;
+ union xfs_btree_irec high_brec;
+ struct xfs_alloc_query_range_info query;
+
+ ASSERT(cur->bc_btnum == XFS_BTNUM_BNO);
+ low_brec.a = *low_rec;
+ high_brec.a = *high_rec;
+ query.priv = priv;
+ query.fn = fn;
+ return xfs_btree_query_range(cur, &low_brec, &high_brec,
+ xfs_alloc_query_range_helper, &query);
+}
@@ -223,4 +223,14 @@ int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno,
xfs_extlen_t xfs_prealloc_blocks(struct xfs_mount *mp);
+typedef int (*xfs_alloc_query_range_fn)(
+ struct xfs_btree_cur *cur,
+ struct xfs_alloc_rec_incore *rec,
+ void *priv);
+
+int xfs_alloc_query_range(struct xfs_btree_cur *cur,
+ struct xfs_alloc_rec_incore *low_rec,
+ struct xfs_alloc_rec_incore *high_rec,
+ xfs_alloc_query_range_fn fn, void *priv);
+
#endif /* __XFS_ALLOC_H__ */
Implement a query_range function for the bnobt and cntbt. This will be used for getfsmap fallback if there is no rmapbt and by the online scrub and repair code. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> --- fs/xfs/libxfs/xfs_alloc.c | 42 ++++++++++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_alloc.h | 10 ++++++++++ 2 files changed, 52 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html