[PATCH] relayfs: use generic_ip for private data

Use inode->u.generic_ip instead of relayfs_inode_info to store pointer to user
data.  Clients using relayfs_file_create() to create their own files would
probably more expect their data to be stored in generic_ip; we also intend in
the next set of patches to get rid of relayfs-specific stuff in the file
operations, so we might as well do it here.

Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 8 deletions

diff --git a/fs/relayfs/inode.c b/fs/relayfs/inode.c
index b2f50655736b..7f6d2c8e91c2 100644
--- a/fs/relayfs/inode.c
+++ b/fs/relayfs/inode.c
@@ -54,7 +54,8 @@ static struct inode *relayfs_get_inode(struct super_block *sb,
         switch (mode & S_IFMT) {
         case S_IFREG:
                 inode->i_fop = fops;
-                RELAYFS_I(inode)->data = data;
+                if (data)
+                        inode->u.generic_ip = data;
                 break;
         case S_IFDIR:
                 inode->i_op = &simple_dir_inode_operations;
@@ -255,8 +256,9 @@ int relayfs_remove_dir(struct dentry *dentry)
  */
 static int relayfs_open(struct inode *inode, struct file *filp)
 {
-        struct rchan_buf *buf = RELAYFS_I(inode)->data;
+        struct rchan_buf *buf = inode->u.generic_ip;
         kref_get(&buf->kref);
+        filp->private_data = buf;
 
         return 0;
 }
@@ -270,8 +272,8 @@ static int relayfs_open(struct inode *inode, struct file *filp)
  */
 static int relayfs_mmap(struct file *filp, struct vm_area_struct *vma)
 {
-        struct inode *inode = filp->f_dentry->d_inode;
-        return relay_mmap_buf(RELAYFS_I(inode)->data, vma);
+        struct rchan_buf *buf = filp->private_data;
+        return relay_mmap_buf(buf, vma);
 }
 
 /**
@@ -284,8 +286,7 @@ static int relayfs_mmap(struct file *filp, struct vm_area_struct *vma)
 static unsigned int relayfs_poll(struct file *filp, poll_table *wait)
 {
         unsigned int mask = 0;
-        struct inode *inode = filp->f_dentry->d_inode;
-        struct rchan_buf *buf = RELAYFS_I(inode)->data;
+        struct rchan_buf *buf = filp->private_data;
 
         if (buf->finalized)
                 return POLLERR;
@@ -309,7 +310,7 @@ static unsigned int relayfs_poll(struct file *filp, poll_table *wait)
  */
 static int relayfs_release(struct inode *inode, struct file *filp)
 {
-        struct rchan_buf *buf = RELAYFS_I(inode)->data;
+        struct rchan_buf *buf = filp->private_data;
         kref_put(&buf->kref, relay_remove_buf);
 
         return 0;
@@ -470,8 +471,8 @@ static ssize_t relayfs_read(struct file *filp,
                             size_t count,
                             loff_t *ppos)
 {
+        struct rchan_buf *buf = filp->private_data;
         struct inode *inode = filp->f_dentry->d_inode;
-        struct rchan_buf *buf = RELAYFS_I(inode)->data;
         size_t read_start, avail;
         ssize_t ret = 0;
         void *from;