Hi,
This patch changes cont_prepare_write(), in order to support a large
file.
int cont_prepare_write(struct page *page, unsigned offset,
- unsigned to, get_block_t *get_block, unsigned long *bytes)
+ unsigned to, get_block_t *get_block, loff_t *bytes)
And it adds 4G-1 file support to FAT32.
Please apply.
-- OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>diff -urN linux-2.5.24/fs/buffer.c fat_big-file-2.5.24/fs/buffer.c --- linux-2.5.24/fs/buffer.c Sun Jun 23 15:43:09 2002 +++ fat_big-file-2.5.24/fs/buffer.c Sun Jun 23 15:31:44 2002 @@ -1930,7 +1930,7 @@ */ int cont_prepare_write(struct page *page, unsigned offset, - unsigned to, get_block_t *get_block, unsigned long *bytes) + unsigned to, get_block_t *get_block, loff_t *bytes) { struct address_space *mapping = page->mapping; struct inode *inode = mapping->host; diff -urN linux-2.5.24/fs/fat/file.c fat_big-file-2.5.24/fs/fat/file.c --- linux-2.5.24/fs/fat/file.c Sun Jun 23 15:43:10 2002 +++ fat_big-file-2.5.24/fs/fat/file.c Sun Jun 23 15:31:45 2002 @@ -54,7 +54,7 @@ } if (!create) return 0; - if (iblock << sb->s_blocksize_bits != MSDOS_I(inode)->mmu_private) { + if (iblock != MSDOS_I(inode)->mmu_private >> sb->s_blocksize_bits) { BUG(); return -EIO; } diff -urN linux-2.5.24/fs/fat/inode.c fat_big-file-2.5.24/fs/fat/inode.c --- linux-2.5.24/fs/fat/inode.c Sun Jun 23 15:43:10 2002 +++ fat_big-file-2.5.24/fs/fat/inode.c Sun Jun 23 15:31:45 2002 @@ -417,7 +417,7 @@ } inode->i_blksize = 1 << sbi->cluster_bits; inode->i_blocks = ((inode->i_size + inode->i_blksize - 1) - & ~(inode->i_blksize - 1)) >> 9; + & ~((loff_t)inode->i_blksize - 1)) >> 9; MSDOS_I(inode)->i_logstart = 0; MSDOS_I(inode)->mmu_private = inode->i_size; @@ -775,6 +775,8 @@ sbi->fat_length = CF_LE_L(b->fat32_length); sbi->root_cluster = CF_LE_L(b->root_cluster); + sb->s_maxbytes = 0xffffffff; + /* MC - if info_sector is 0, don't multiply by 0 */ sbi->fsinfo_sector = CF_LE_W(b->info_sector); if (sbi->fsinfo_sector == 0) @@ -1063,7 +1065,7 @@ /* this is as close to the truth as we can get ... */ inode->i_blksize = 1 << sbi->cluster_bits; inode->i_blocks = ((inode->i_size + inode->i_blksize - 1) - & ~(inode->i_blksize - 1)) >> 9; + & ~((loff_t)inode->i_blksize - 1)) >> 9; inode->i_mtime = inode->i_atime = date_dos2unix(CF_LE_W(de->time),CF_LE_W(de->date)); inode->i_ctime = diff -urN linux-2.5.24/include/linux/buffer_head.h fat_big-file-2.5.24/include/linux/buffer_head.h --- linux-2.5.24/include/linux/buffer_head.h Sun Jun 23 15:43:30 2002 +++ fat_big-file-2.5.24/include/linux/buffer_head.h Sun Jun 23 15:32:04 2002 @@ -180,7 +180,7 @@ int block_read_full_page(struct page*, get_block_t*); int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*); int cont_prepare_write(struct page*, unsigned, unsigned, get_block_t*, - unsigned long *); + loff_t *); int generic_cont_expand(struct inode *inode, loff_t size) ; int block_commit_write(struct page *page, unsigned from, unsigned to); int block_sync_page(struct page *); diff -urN linux-2.5.24/include/linux/msdos_fs_i.h fat_big-file-2.5.24/include/linux/msdos_fs_i.h --- linux-2.5.24/include/linux/msdos_fs_i.h Sun Jun 23 15:43:31 2002 +++ fat_big-file-2.5.24/include/linux/msdos_fs_i.h Sun Jun 23 15:32:06 2002 @@ -8,7 +8,7 @@ */ struct msdos_inode_info { - unsigned long mmu_private; + loff_t mmu_private; int i_start; /* first cluster or 0 */ int i_logstart; /* logical first cluster */ int i_attrs; /* unused attribute bits */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Jun 30 2002 - 22:00:14 EST