affs: introduce VFS superblock object back-reference

Add an 'sb' VFS superblock back-reference to the 'struct affs_sb_info' data
structure - we will need to find the VFS superblock from a 'struct
affs_sb_info' object in the next patch, so this change is jut a preparation.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 2 insertions, 0 deletions

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 1fceb320d2f2..5a726e992245 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -100,6 +100,7 @@ struct affs_sb_info {
         char *s_prefix;                 /* Prefix for volumes and assigns. */
         char s_volume[32];              /* Volume prefix for absolute symlinks. */
         spinlock_t symlink_lock;        /* protects the previous two */
+        struct super_block *sb;         /* the VFS superblock object */
 };
 
 #define SF_INTL         0x0001          /* International filesystem. */
diff --git a/fs/affs/super.c b/fs/affs/super.c
index da7498da80a6..0496cbbeda1b 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -299,6 +299,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
                 return -ENOMEM;
 
         sb->s_fs_info = sbi;
+        sbi->sb = sb;
         mutex_init(&sbi->s_bmlock);
         spin_lock_init(&sbi->symlink_lock);