1 files changed, 8 insertions, 5 deletions

diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 0cd9ba00f968..08865ed70f00 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -116,23 +116,26 @@ struct hfsplus_sb_info {
         struct inode *hidden_dir;
         struct nls_table *nls;
 
-        /* synchronize block allocations */
-        struct mutex alloc_mutex;
-
         /* Runtime variables */
         u32 blockoffset;
         u32 sect_count;
         int fs_shift;
 
-        /* Stuff in host order from Vol Header */
+        /* immutable data from the volume header */
         u32 alloc_blksz;
         int alloc_blksz_shift;
         u32 total_blocks;
+        u32 data_clump_blocks, rsrc_clump_blocks;
+
+        /* mutable data from the volume header, protected by alloc_mutex */
         u32 free_blocks;
+        struct mutex alloc_mutex;
+
+        /* mutable data from the volume header, protected by vh_mutex */
         u32 next_cnid;
         u32 file_count;
         u32 folder_count;
-        u32 data_clump_blocks, rsrc_clump_blocks;
+        struct mutex vh_mutex;
 
         /* Config options */
         u32 creator;