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

Move the i_bdev 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/inode.c b/fs/inode.c
index 77e2547..41b4622 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -254,7 +254,7 @@ void clear_inode(struct inode *inode)
        DQUOT_DROP(inode);
        if (inode->i_sb && inode->i_sb->s_op->clear_inode)
                inode->i_sb->s_op->clear_inode(inode);
-       if (inode->i_bdev)
+       if (S_ISBLK(inode->i_mode) && inode->i_bdev)
                bd_forget(inode);
        if (inode->i_cdev)
                cd_forget(inode);

diff --git a/include/linux/fs.h b/include/linux/fs.h
index ca695fc..98ff684 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -531,8 +531,8 @@ struct inode {
        struct list_head        i_devices;
        union {
                struct pipe_inode_info  *i_pipe;
+               struct block_device     *i_bdev;
        };
-       struct block_device     *i_bdev;
        struct cdev             *i_cdev;
        int                     i_cindex;