[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>
diff --git a/fs/file_table.c b/fs/file_table.c
index 0131ba0..bc35a40 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -169,7 +169,7 @@
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 41b4622..f5c04dd 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -256,7 +256,7 @@
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 98ff684..192e69b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -532,8 +532,8 @@
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;