* [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7.
@ 2011-08-16 14:28 Namjae Jeon
2011-08-17 3:04 ` OGAWA Hirofumi
0 siblings, 1 reply; 3+ messages in thread
From: Namjae Jeon @ 2011-08-16 14:28 UTC (permalink / raw)
To: hirofumi; +Cc: linux-kernel, Namjae Jeon
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 <linkinjeon@gmail.com>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7.
2011-08-16 14:28 [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7 Namjae Jeon
@ 2011-08-17 3:04 ` OGAWA Hirofumi
0 siblings, 0 replies; 3+ messages in thread
From: OGAWA Hirofumi @ 2011-08-17 3:04 UTC (permalink / raw)
To: Namjae Jeon; +Cc: linux-kernel
Namjae Jeon <linkinjeon@gmail.com> writes:
> 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 <linkinjeon@gmail.com>
Thanks. I'll apply.
> ---
> 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)
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7.
@ 2011-07-26 15:17 Namjae Jeon
0 siblings, 0 replies; 3+ messages in thread
From: Namjae Jeon @ 2011-07-26 15:17 UTC (permalink / raw)
To: hirofumi; +Cc: linux-kernel, Namjae Jeon
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 <linkinjeon@gmail.com>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-08-17 3:04 UTC | newest]
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2011-08-16 14:28 [PATCH] fat: fat16 support maximum 4GB file/vol size as WinXP or 7 Namjae Jeon
2011-08-17 3:04 ` OGAWA Hirofumi
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2011-07-26 15:17 Namjae Jeon
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