From: Namjae Jeon Date: Wed, 17 Aug 2011 10:10:09 +0000 (+0900) Subject: fat: fat16 support maximum 4GB file/vol size as WinXP or 7. X-Git-Tag: tegra-l4t-r15-er2~3947^2 X-Git-Url: https://nv-tegra.nvidia.com/r/gitweb?p=linux-2.6.git;a=commitdiff_plain;h=710d4403a45c4040a9aa86971d50958f5ae6ed40 fat: fat16 support maximum 4GB file/vol size as WinXP or 7. 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 Signed-off-by: OGAWA Hirofumi --- diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 52bcf58104e..017493b6431 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1365,6 +1365,7 @@ 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; @@ -1375,8 +1376,6 @@ 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)