diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 6682d6d..5c61c24 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -137,7 +137,7 @@
 #endif
 
 	/* determine how many magic numbers there should be in this page */
-	latter = dir->i_size - (page->index << PAGE_CACHE_SHIFT);
+	latter = dir->i_size - page_offset(page);
 	if (latter >= PAGE_SIZE)
 		qty = PAGE_SIZE;
 	else
diff --git a/fs/buffer.c b/fs/buffer.c
index 263df0f..55f0975a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1762,7 +1762,7 @@
 	 * handle that here by just cleaning them.
 	 */
 
-	block = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+	block = (sector_t)page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
 	head = page_buffers(page);
 	bh = head;
 
@@ -2635,7 +2635,7 @@
 	pgoff_t index = from >> PAGE_CACHE_SHIFT;
 	unsigned offset = from & (PAGE_CACHE_SIZE-1);
 	unsigned blocksize;
-	pgoff_t iblock;
+	sector_t iblock;
 	unsigned length, pos;
 	struct inode *inode = mapping->host;
 	struct page *page;
@@ -2651,7 +2651,7 @@
 		return 0;
 
 	length = blocksize - length;
-	iblock = index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+	iblock = (sector_t)index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
 	
 	page = grab_cache_page(mapping, index);
 	err = -ENOMEM;
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index d0401dc..6f5df17 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -99,8 +99,8 @@
 vxfs_immed_readpage(struct file *fp, struct page *pp)
 {
 	struct vxfs_inode_info	*vip = VXFS_INO(pp->mapping->host);
-	u_int64_t		offset = pp->index << PAGE_CACHE_SHIFT;
-	caddr_t			kaddr;
+	u_int64_t	offset = (u_int64_t)pp->index << PAGE_CACHE_SHIFT;
+	caddr_t		kaddr;
 
 	kaddr = kmap(pp);
 	memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_CACHE_SIZE);
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index 3dcc6d2..2559ee1 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -757,7 +757,7 @@
 
 	read_len = 0;
 	result = 0;
-	offset = page->index << PAGE_CACHE_SHIFT;
+	offset = page_offset(page);
 
 	kmap(page);
 	buf = page_address(page);
@@ -1545,7 +1545,7 @@
 {
        void *addr = page_address(page) + from;
        /* XXX: PAGE_CACHE_SHIFT or PAGE_SHIFT */
-       loff_t pos = (page->index<<PAGE_CACHE_SHIFT) + from;
+       loff_t pos = page_offset(page) + from;
 
        return jffs_file_write(filp, addr, to-from, &pos);
 } /* jffs_commit_write() */
diff --git a/fs/mpage.c b/fs/mpage.c
index f1d2d02..e431cb3 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -184,7 +184,7 @@
 	if (page_has_buffers(page))
 		goto confused;
 
-	block_in_file = page->index << (PAGE_CACHE_SHIFT - blkbits);
+	block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);
 	last_block = (i_size_read(inode) + blocksize - 1) >> blkbits;
 
 	bh.b_page = page;
@@ -466,7 +466,7 @@
 	 * The page has no buffers: map it to disk
 	 */
 	BUG_ON(!PageUptodate(page));
-	block_in_file = page->index << (PAGE_CACHE_SHIFT - blkbits);
+	block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);
 	last_block = (i_size - 1) >> blkbits;
 	map_bh.b_page = page;
 	for (page_block = 0; page_block < blocks_per_page; ) {
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index c74f382..0a13859 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -418,7 +418,7 @@
 romfs_readpage(struct file *file, struct page * page)
 {
 	struct inode *inode = page->mapping->host;
-	unsigned long offset, avail, readlen;
+	loff_t offset, avail, readlen;
 	void *buf;
 	int result = -EIO;
 
@@ -429,8 +429,8 @@
 		goto err_out;
 
 	/* 32 bit warning -- but not for us :) */
-	offset = page->index << PAGE_CACHE_SHIFT;
-	if (offset < inode->i_size) {
+	offset = page_offset(page);
+	if (offset < i_size_read(inode)) {
 		avail = inode->i_size-offset;
 		readlen = min_t(unsigned long, avail, PAGE_SIZE);
 		if (romfs_copyfrom(inode, buf, ROMFS_I(inode)->i_dataoffset+offset, readlen) == readlen) {
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index 3c6eb3b..7042e62 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -209,8 +209,8 @@
 {
 	struct dentry *dentry = file->f_dentry;
 
-	DEBUG1("(%s/%s %d@%ld)\n", DENTRY_PATH(dentry), 
-	       count, (page->index << PAGE_CACHE_SHIFT)+offset);
+	DEBUG1("(%s/%s %d@%lld)\n", DENTRY_PATH(dentry), count,
+		((unsigned long long)page->index << PAGE_CACHE_SHIFT) + offset);
 
 	return smb_writepage_sync(dentry->d_inode, page, offset, count);
 }
diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c
index 69a085a..cce8b05 100644
--- a/fs/sysv/dir.c
+++ b/fs/sysv/dir.c
@@ -103,7 +103,7 @@
 			offset = (char *)de - kaddr;
 
 			over = filldir(dirent, name, strnlen(name,SYSV_NAMELEN),
-					(n<<PAGE_CACHE_SHIFT) | offset,
+					((loff_t)n<<PAGE_CACHE_SHIFT) | offset,
 					fs16_to_cpu(SYSV_SB(sb), de->inode),
 					DT_UNKNOWN);
 			if (over) {
@@ -115,7 +115,7 @@
 	}
 
 done:
-	filp->f_pos = (n << PAGE_CACHE_SHIFT) | offset;
+	filp->f_pos = ((loff_t)n << PAGE_CACHE_SHIFT) | offset;
 	unlock_kernel();
 	return 0;
 }