1 files changed, 11 insertions, 0 deletions

diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index 37dbd6404787..defb932eee9a 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -72,6 +72,17 @@ static int zisofs_readpage(struct file *file, struct page *page)
         offset = index & ~zisofs_block_page_mask;
         blockindex = offset >> zisofs_block_page_shift;
         maxpage = (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+
+        /*
+         * If this page is wholly outside i_size we just return zero;
+         * do_generic_file_read() will handle this for us
+         */
+        if (page->index >= maxpage) {
+                SetPageUptodate(page);
+                unlock_page(page);
+                return 0;
+        }
+
         maxpage = min(zisofs_block_pages, maxpage-offset);
 
         for ( i = 0 ; i < maxpage ; i++, offset++ ) {