1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/staging/ncpfs/mmap.c b/drivers/staging/ncpfs/mmap.c
deleted file mode 100644
index a5c5cf2ff007..000000000000
--- a/drivers/staging/ncpfs/mmap.c
+++ /dev/null
@@ -1,125 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  mmap.c
- *
- *  Copyright (C) 1995, 1996 by Volker Lendecke
- *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
- *
- */
-
-#include <linux/stat.h>
-#include <linux/time.h>
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/shm.h>
-#include <linux/errno.h>
-#include <linux/mman.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/memcontrol.h>
-
-#include <linux/uaccess.h>
-
-#include "ncp_fs.h"
-
-/*
- * Fill in the supplied page for mmap
- * XXX: how are we excluding truncate/invalidate here? Maybe need to lock
- * page?
- */
-static int ncp_file_mmap_fault(struct vm_fault *vmf)
-{
-	struct inode *inode = file_inode(vmf->vma->vm_file);
-	char *pg_addr;
-	unsigned int already_read;
-	unsigned int count;
-	int bufsize;
-	int pos; /* XXX: loff_t ? */
-
-	/*
-	 * ncpfs has nothing against high pages as long
-	 * as recvmsg and memset works on it
-	 */
-	vmf->page = alloc_page(GFP_HIGHUSER);
-	if (!vmf->page)
-		return VM_FAULT_OOM;
-	pg_addr = kmap(vmf->page);
-	pos = vmf->pgoff << PAGE_SHIFT;
-
-	count = PAGE_SIZE;
-	/* what we can read in one go */
-	bufsize = NCP_SERVER(inode)->buffer_size;
-
-	already_read = 0;
-	if (ncp_make_open(inode, O_RDONLY) >= 0) {
-		while (already_read < count) {
-			int read_this_time;
-			int to_read;
-
-			to_read = bufsize - (pos % bufsize);
-
-			to_read = min_t(unsigned int, to_read, count - already_read);
-
-			if (ncp_read_kernel(NCP_SERVER(inode),
-				     NCP_FINFO(inode)->file_handle,
-				     pos, to_read,
-				     pg_addr + already_read,
-				     &read_this_time) != 0) {
-				read_this_time = 0;
-			}
-			pos += read_this_time;
-			already_read += read_this_time;
-
-			if (read_this_time < to_read) {
-				break;
-			}
-		}
-		ncp_inode_close(inode);
-
-	}
-
-	if (already_read < PAGE_SIZE)
-		memset(pg_addr + already_read, 0, PAGE_SIZE - already_read);
-	flush_dcache_page(vmf->page);
-	kunmap(vmf->page);
-
-	/*
-	 * If I understand ncp_read_kernel() properly, the above always
-	 * fetches from the network, here the analogue of disk.
-	 * -- nyc
-	 */
-	count_vm_event(PGMAJFAULT);
-	count_memcg_event_mm(vmf->vma->vm_mm, PGMAJFAULT);
-	return VM_FAULT_MAJOR;
-}
-
-static const struct vm_operations_struct ncp_file_mmap =
-{
-	.fault = ncp_file_mmap_fault,
-};
-
-
-/* This is used for a general mmap of a ncp file */
-int ncp_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct inode *inode = file_inode(file);
-	
-	ncp_dbg(1, "called\n");
-
-	if (!ncp_conn_valid(NCP_SERVER(inode)))
-		return -EIO;
-
-	/* only PAGE_COW or read-only supported now */
-	if (vma->vm_flags & VM_SHARED)
-		return -EINVAL;
-	/* we do not support files bigger than 4GB... We eventually 
-	   supports just 4GB... */
-	if (vma_pages(vma) + vma->vm_pgoff
-	   > (1U << (32 - PAGE_SHIFT)))
-		return -EFBIG;
-
-	vma->vm_ops = &ncp_file_mmap;
-	file_accessed(file);
-	return 0;
-}