[PATCH v2 6/7] affs: introduce VFS superblock object back-reference

From: Artem Bityutskiy
Date: Wed Jun 06 2012 - 11:55:48 EST


From: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx>
---
fs/affs/affs.h | 1 +
fs/affs/super.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 1fceb32..5a726e9 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 da7498d..0496cbb 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);

--
1.7.7.6

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