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-rw-r--r--fs/ext4/ext4_jbd2.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index f97611171023..5e61e464d71c 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -77,7 +77,14 @@
#define EXT4_RESERVE_TRANS_BLOCKS 12U
-#define EXT4_INDEX_EXTRA_TRANS_BLOCKS 8
+/*
+ * Number of credits needed if we need to insert an entry into a
+ * directory. For each new index block, we need 4 blocks (old index
+ * block, new index block, bitmap block, bg summary). For normal
+ * htree directories there are 2 levels; if the largedir feature
+ * enabled it's 3 levels.
+ */
+#define EXT4_INDEX_EXTRA_TRANS_BLOCKS 12U
#ifdef CONFIG_QUOTA
/* Amount of blocks needed for quota update - we know that the structure was