X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=fs%2Focfs2%2Fsuballoc.h;h=8799033bb459d9adc4b558d0e50c1b4a52562b61;hb=074fcab574a36edec35d2e74955250f2e17d6000;hp=f212dc01a84bd83088f5f7a70460a44efddc1b4a;hpb=99e1221d1a1edac316f7f8116c781f75733b1159;p=~andy%2Flinux

diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h
index f212dc01a84..8799033bb45 100644
--- a/fs/ocfs2/suballoc.h
+++ b/fs/ocfs2/suballoc.h
@@ -85,6 +85,17 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
 			 u32 min_clusters,
 			 u32 *cluster_start,
 			 u32 *num_clusters);
+/*
+ * Use this variant of ocfs2_claim_clusters to specify a maxiumum
+ * number of clusters smaller than the allocation reserved.
+ */
+int __ocfs2_claim_clusters(struct ocfs2_super *osb,
+			   handle_t *handle,
+			   struct ocfs2_alloc_context *ac,
+			   u32 min_clusters,
+			   u32 max_clusters,
+			   u32 *cluster_start,
+			   u32 *num_clusters);
 
 int ocfs2_free_suballoc_bits(handle_t *handle,
 			     struct inode *alloc_inode,
@@ -136,4 +147,12 @@ static inline int ocfs2_is_cluster_bitmap(struct inode *inode)
 int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb,
 				      struct ocfs2_alloc_context *ac);
 
+/* given a cluster offset, calculate which block group it belongs to
+ * and return that block offset. */
+u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster);
+
+/* somewhat more expensive than our other checks, so use sparingly. */
+int ocfs2_check_group_descriptor(struct super_block *sb,
+				 struct ocfs2_dinode *di,
+				 struct ocfs2_group_desc *gd);
 #endif /* _CHAINALLOC_H_ */