ocfs2: fix wrong check in ocfs2_direct_IO_get_blocks

[sfrench/cifs-2.6.git] / fs / ocfs2 / ocfs2.h

diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 460c6c37e683f844bd9612d51e6b89224cabb22b..690ddc60189b5270246f971c4e21a63bfb0a0254 100644 (file)
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -717,6 +717,16 @@ static inline u64 ocfs2_clusters_to_blocks(struct super_block *sb,
        return (u64)clusters << c_to_b_bits;
 }
 
+static inline u32 ocfs2_clusters_for_blocks(struct super_block *sb,
+               u64 blocks)
+{
+       int b_to_c_bits = OCFS2_SB(sb)->s_clustersize_bits -
+                       sb->s_blocksize_bits;
+
+       blocks += (1 << b_to_c_bits) - 1;
+       return (u32)(blocks >> b_to_c_bits);
+}
+
 static inline u32 ocfs2_blocks_to_clusters(struct super_block *sb,
                                           u64 blocks)
 {