affs: unobfuscate affs_fix_dcache()

and add a comment on what it's doing

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 8 insertions, 6 deletions

diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 1c7fd7928d1f..843cdc994804 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -122,15 +122,13 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh)
 }
 
 static void
-affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
+affs_fix_dcache(struct inode *inode, u32 entry_ino)
 {
-        struct inode *inode = dentry->d_inode;
-        void *data = dentry->d_fsdata;
-
+        struct dentry *dentry;
         spin_lock(&inode->i_lock);
         list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
                 if (entry_ino == (u32)(long)dentry->d_fsdata) {
-                        dentry->d_fsdata = data;
+                        dentry->d_fsdata = (void *)inode->i_ino;
                         break;
                 }
         }
@@ -172,7 +170,11 @@ affs_remove_link(struct dentry *dentry)
                 }
 
                 affs_lock_dir(dir);
-                affs_fix_dcache(dentry, link_ino);
+                /*
+                 * if there's a dentry for that block, make it
+                 * refer to inode itself.
+                 */
+                affs_fix_dcache(inode, link_ino);
                 retval = affs_remove_hash(dir, link_bh);
                 if (retval) {
                         affs_unlock_dir(dir);