ubifs: Implement UBIFS_FLG_DOUBLE_HASH
This feature flag indicates that all directory entry nodes have a 32bit
cookie set and therefore UBIFS is allowed to perform lookups by hash.
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 9be71b6..5089663 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1006,6 +1006,7 @@ struct ubifs_debug_info;
*
* @big_lpt: flag that LPT is too big to write whole during commit
* @space_fixup: flag indicating that free space in LEBs needs to be cleaned up
+ * @double_hash: flag indicating that we can do lookups by hash
* @no_chk_data_crc: do not check CRCs when reading data nodes (except during
* recovery)
* @bulk_read: enable bulk-reads
@@ -1248,6 +1249,7 @@ struct ubifs_info {
unsigned int big_lpt:1;
unsigned int space_fixup:1;
+ unsigned int double_hash:1;
unsigned int no_chk_data_crc:1;
unsigned int bulk_read:1;
unsigned int default_compr:2;