afs: Fix directory format encoding struct

The AFS directory format structure, union afs_xdr_dir_block::meta, has too
many alloc counter slots declared and so pushes the hash table along and
over the data. This doesn't cause a problem at the moment because I'm
currently ignoring the hash table and only using the correct number of
alloc_ctrs in the code anyway. In future, however, I should start using
the hash table to try and speed up afs_lookup().

Fix this by using the correct constant to declare the counter array.

Fixes: 4ea219a839bf ("afs: Split the directory content defs into a header")
Signed-off-by: David Howells <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
cc: Marc Dionne <[e-mail]>
cc: [e-mail]
Signed-off-by: Christian Brauner <[e-mail]>

fs/afs/xdr_fs.h

···
 
 	struct {
 		struct afs_xdr_dir_hdr	hdr;
-		u8			alloc_ctrs[AFS_DIR_MAX_BLOCKS];
+		u8			alloc_ctrs[AFS_DIR_BLOCKS_WITH_CTR];
 		__be16			hashtable[AFS_DIR_HASHTBL_SIZE];
 	} meta;