Changeset 377cce8 in mainline for uspace/srv/fs/fat/fat.h

Timestamp:

2010-07-25T21:08:47Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

746f623

Parents:

c621f4aa

Message:

Start to cache the FAT node's last cluster in fat_node_t and change
fat_append/chop_clusters() to make use of the cached value.

File:

• uspace/srv/fs/fat/fat.h (modified) (1 diff)

uspace/srv/fs/fat/fat.h

@@ -198 +198 @@
         unsigned                refcnt;
         bool                    dirty;
+
+        /*
+         * Cache of the node's last cluster to avoid some unnecessary FAT walks.
+         */
+        bool                    lastc_cached_valid;
+        fat_cluster_t           lastc_cached_value;
 } fat_node_t;