[PATCH] inode-diet: Move i_cdev into a union

Move the i_cdev pointer in struct inode into a union.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 3 insertions, 3 deletions

diff --git a/fs/file_table.c b/fs/file_table.c
index 0131ba06e1ee..bc35a40417d7 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -169,7 +169,7 @@ void fastcall __fput(struct file *file)
         if (file->f_op && file->f_op->release)
                 file->f_op->release(inode, file);
         security_file_free(file);
-        if (unlikely(inode->i_cdev != NULL))
+        if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL))
                 cdev_put(inode->i_cdev);
         fops_put(file->f_op);
         if (file->f_mode & FMODE_WRITE)
diff --git a/fs/inode.c b/fs/inode.c
index 41b462232f7f..f5c04dd9ae8a 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -256,7 +256,7 @@ void clear_inode(struct inode *inode)
                 inode->i_sb->s_op->clear_inode(inode);
         if (S_ISBLK(inode->i_mode) && inode->i_bdev)
                 bd_forget(inode);
-        if (inode->i_cdev)
+        if (S_ISCHR(inode->i_mode) && inode->i_cdev)
                 cd_forget(inode);
         inode->i_state = I_CLEAR;
 }
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 98ff684a5b1c..192e69bb55b5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -532,8 +532,8 @@ struct inode {
         union {
                 struct pipe_inode_info  *i_pipe;
                 struct block_device     *i_bdev;
+                struct cdev             *i_cdev;
         };
-        struct cdev             *i_cdev;
         int                     i_cindex;
 
         __u32                   i_generation;