fatfs: port to libdiskfs' node cache

* fatfs/inode.c: Drop all cache-related code.
(diskfs_user_make_node): New function.
(diskfs_cached_lookup_in_dirbuf): Reimplement using the `lookup_context'.
(read_node): Rename to diskfs_user_read_node and adopt accordingly.
(diskfs_try_dropping_softrefs): Rename to `diskfs_user_try_dropping_softrefs'.
(diskfs_node_reload): Pass context to `diskfs_user_read_node'.
(diskfs_alloc_node): Pass `dir' via context to `diskfs_user_read_node'.
* fatfs/fatfs.h (struct disknode): Drop fields `hnext', `hprevp'.
(struct lookup_context): New definition.
(ifind): Drop declaration.
* fatfs/dir.c (diskfs_lookup_hard): Adjust accordingly.
* fatfs/main.c (fetch_root): Likewise.

1 files changed, 3 insertions, 3 deletions

diff --git a/fatfs/main.c b/fatfs/main.c
index 2bbcdfaa..00c56bc5 100644
--- a/fatfs/main.c
+++ b/fatfs/main.c
@@ -143,7 +143,7 @@ fetch_root ()
 {
   error_t err;
   ino_t inum;
-  inode_t inode;
+  struct lookup_context ctx;
 
   memset (&dr_root_node, 0, sizeof(struct dirrect));
 
@@ -196,13 +196,13 @@ fetch_root ()
      from the vi_zero_key (in the dir_offset value) as well as all
      normal virtual inode keys (in the dir_inode value).  Enter the
      disknode into the inode table.  */
-  err = vi_new ((struct vi_key) {0, 1}, &inum, &inode);
+  err = vi_new ((struct vi_key) {0, 1}, &inum, &ctx.inode);
   assert_perror (err);
 
   /* Allocate a node for the root directory disknode in
      diskfs_root_node.  */
   if (!err)
-    err = diskfs_cached_lookup (inum, &diskfs_root_node);
+    err = diskfs_cached_lookup_context (inum, &diskfs_root_node, &ctx);
 
   assert_perror (err);