---

yaml --- r: 273112 b: refs/heads/master c: 3212a80 h: refs/heads/master v: v3
git-mirror · Sep 9, 2011 · 3d58b70 · 3d58b70
1 parent 884d238
commit 3d58b70
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Showing 3 changed files with 7 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d5b8f31007a93777cfb0603b665858fb7aebebfc
+refs/heads/master: 3212a80a58062056bb922811071062be58d8fee1
diff --git a/trunk/fs/ext4/balloc.c b/trunk/fs/ext4/balloc.c
@@ -28,7 +28,8 @@
  */
 
 /*
- * Calculate the block group number and offset, given a block number
+ * Calculate the block group number and offset into the block/cluster
+ * allocation bitmap, given a block number
  */
 void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
 		ext4_group_t *blockgrpp, ext4_grpblk_t *offsetp)
@@ -37,7 +38,8 @@ void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
 	ext4_grpblk_t offset;
 
 	blocknr = blocknr - le32_to_cpu(es->s_first_data_block);
-	offset = do_div(blocknr, EXT4_BLOCKS_PER_GROUP(sb));
+	offset = do_div(blocknr, EXT4_BLOCKS_PER_GROUP(sb)) >>
+		EXT4_SB(sb)->s_cluster_bits;
 	if (offsetp)
 		*offsetp = offset;
 	if (blockgrpp)

diff --git a/trunk/fs/ext4/mballoc.h b/trunk/fs/ext4/mballoc.h
@@ -216,6 +216,7 @@ struct ext4_buddy {
 static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb,
 					struct ext4_free_extent *fex)
 {
-	return ext4_group_first_block_no(sb, fex->fe_group) + fex->fe_start;
+	return ext4_group_first_block_no(sb, fex->fe_group) +
+		(fex->fe_start << EXT4_SB(sb)->s_cluster_bits);
 }
 #endif