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Commit 710d4403 authored by Namjae Jeon's avatar Namjae Jeon Committed by OGAWA Hirofumi
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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: default avatarNamjae Jeon <linkinjeon@gmail.com>
Signed-off-by: default avatarOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
parent 186b5370

fs/fat/inode.c

+1 −2
Original line number Diff line number Diff line
@@ -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)