Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

[linux-2.6] / fs / ext2 / dir.c

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 0b02ba9642d2e817cb908f0ae10a37c6ae8366c4..1d1e7e30d70e1fd21e0890a82c64fb5fc340acb0 100644 (file)
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -161,10 +161,7 @@ static struct page * ext2_get_page(struct inode *dir, unsigned long n)
        struct address_space *mapping = dir->i_mapping;
        struct page *page = read_mapping_page(mapping, n, NULL);
        if (!IS_ERR(page)) {
-               wait_on_page_locked(page);
                kmap(page);
-               if (!PageUptodate(page))
-                       goto fail;
                if (!PageChecked(page))
                        ext2_check_page(page);
                if (PageError(page))
@@ -368,6 +365,14 @@ struct ext2_dir_entry_2 * ext2_find_entry (struct inode * dir,
                }
                if (++n >= npages)
                        n = 0;
+               /* next page is past the blocks we've got */
+               if (unlikely(n > (dir->i_blocks >> (PAGE_CACHE_SHIFT - 9)))) {
+                       ext2_error(dir->i_sb, __FUNCTION__,
+                               "dir %lu size %lld exceeds block count %llu",
+                               dir->i_ino, dir->i_size,
+                               (unsigned long long)dir->i_blocks);
+                       goto out;
+               }
        } while (n != start);
 out:
        return NULL;