iomap: constify struct iomap_ops

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/iomap.c b/fs/iomap.c
index 354a123..7f08ca0 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -41,7 +41,7 @@
  */
 loff_t
 iomap_apply(struct inode *inode, loff_t pos, loff_t length, unsigned flags,
-		struct iomap_ops *ops, void *data, iomap_actor_t actor)
+		const struct iomap_ops *ops, void *data, iomap_actor_t actor)
 {
 	struct iomap iomap = { 0 };
 	loff_t written = 0, ret;
@@ -232,7 +232,7 @@
 
 ssize_t
 iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *iter,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	struct inode *inode = iocb->ki_filp->f_mapping->host;
 	loff_t pos = iocb->ki_pos, ret = 0, written = 0;
@@ -315,7 +315,7 @@
 
 int
 iomap_file_dirty(struct inode *inode, loff_t pos, loff_t len,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	loff_t ret;
 
@@ -395,7 +395,7 @@
 
 int
 iomap_zero_range(struct inode *inode, loff_t pos, loff_t len, bool *did_zero,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	loff_t ret;
 
@@ -415,7 +415,7 @@
 
 int
 iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	unsigned blocksize = (1 << inode->i_blkbits);
 	unsigned off = pos & (blocksize - 1);
@@ -443,7 +443,7 @@
 }
 
 int iomap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	struct page *page = vmf->page;
 	struct inode *inode = file_inode(vma->vm_file);
@@ -542,7 +542,7 @@
 }
 
 int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fi,
-		loff_t start, loff_t len, struct iomap_ops *ops)
+		loff_t start, loff_t len, const struct iomap_ops *ops)
 {
 	struct fiemap_ctx ctx;
 	loff_t ret;
@@ -836,8 +836,8 @@
 }
 
 ssize_t
-iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, struct iomap_ops *ops,
-		iomap_dio_end_io_t end_io)
+iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
+		const struct iomap_ops *ops, iomap_dio_end_io_t end_io)
 {
 	struct address_space *mapping = iocb->ki_filp->f_mapping;
 	struct inode *inode = file_inode(iocb->ki_filp);