[PATCH 2/3] fs: remove unused members in struct file_operations

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Eventually, we want to actually use these members in struct file_operations,
but until we do so, having them there without effect only causes
confusion.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 fs/jffs2/dir.c     | 1 -
 fs/ubifs/dir.c     | 2 +-
 include/linux/fs.h | 8 ++++----
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 94ef51f77881..48584466724d 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -26,7 +26,6 @@ static struct dentry *jffs2_lookup (struct inode *,struct dentry *,
 
 const struct file_operations jffs2_dir_operations =
 {
-	.read 	 = NULL,
 	.iterate = jffs2_readdir,
 };
 
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index a16546e615b7..98a4ec6b81e8 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -492,7 +492,7 @@ const struct inode_operations ubifs_dir_inode_operations = {
 const struct file_operations ubifs_dir_operations = {
 /* 	.llseek         = NULL, not present in barebox */
 /* 	.release        = NULL, not present in barebox */
-	.read           = NULL, /* not present in barebox */
+/*	.read           = NULL, not present in barebox */
 	.iterate	= ubifs_readdir,
 /* 	.fsync          = NULL, not present in barebox */
 /*	.unlocked_ioctl = NULL, not present in barebox */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 28d3146516a6..7461eb367d07 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -456,10 +456,10 @@ struct file_operations {
 	int (*open) (struct inode *, struct file *);
 	int (*release) (struct inode *, struct file *);
 	int (*iterate) (struct file *, struct dir_context *);
-	ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
-	ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
-	int (*ioctl) (struct file *, unsigned int request, void *buf);
-	int (*truncate) (struct file *, loff_t);
+	/*
+	 * TODO: move the remaining callbacks in struct fs_driver
+	 * here with Linux semantics
+	 */
 };
 
 void drop_nlink(struct inode *inode);
-- 
2.39.5