From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752974Ab1HPO3U (ORCPT ); Tue, 16 Aug 2011 10:29:20 -0400 Received: from mail-gy0-f174.google.com ([209.85.160.174]:55787 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752155Ab1HPO3R (ORCPT ); Tue, 16 Aug 2011 10:29:17 -0400 From: Namjae Jeon To: hirofumi@mail.parknet.co.jp Cc: linux-kernel@vger.kernel.org, Namjae Jeon Subject: [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7. Date: Tue, 16 Aug 2011 23:28:51 +0900 Message-Id: <1313504931-1969-1-git-send-email-linkinjeon@gmail.com> X-Mailer: git-send-email 1.7.4.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org FAT16 support maximum 4GB vol/file size with 64KB cluster size. Win NT/XP/7 increased the maximum cluster size to 64KB, and file/vol size increased 4GB also. Although increasing, the file size of linux FAT is still limited at 2GB. I found that it is limited by sb->maxbytes(0x7fffffff) when partition is formatted by FAT16. sb->s_maxbytes in fill_super should be set to 0xffffffff like fat32. Signed-off-by: Namjae Jeon --- fs/fat/inode.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 5942fec..f2dce50 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1367,6 +1367,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->free_clusters = -1; /* Don't know yet */ sbi->free_clus_valid = 0; sbi->prev_free = FAT_START_ENT; + sb->s_maxbytes = 0xffffffff; if (!sbi->fat_length && b->fat32_length) { struct fat_boot_fsinfo *fsinfo; @@ -1377,8 +1378,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->fat_length = le32_to_cpu(b->fat32_length); sbi->root_cluster = le32_to_cpu(b->root_cluster); - sb->s_maxbytes = 0xffffffff; - /* MC - if info_sector is 0, don't multiply by 0 */ sbi->fsinfo_sector = le16_to_cpu(b->info_sector); if (sbi->fsinfo_sector == 0) -- 1.7.4.4