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hfsplus: lift the 2TB size limit

Replace the hardcoded 2TB limit with a dynamic limit based on the block
size now that we have fixed the few overflows preventing operation
with large volumes.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
master
Christoph Hellwig 11 years ago
committed by Christoph Hellwig
parent
commit
c6d5f5fa65
  1. 9
      fs/hfsplus/super.c
  2. 4
      fs/hfsplus/wrapper.c

9
fs/hfsplus/super.c

@ -393,6 +393,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi->rsrc_clump_blocks)
sbi->rsrc_clump_blocks = 1;
err = generic_check_addressable(sbi->alloc_blksz_shift,
sbi->total_blocks);
if (err) {
printk(KERN_ERR "hfs: filesystem size too large.\n");
goto out_free_vhdr;
}
/* Set up operations so we can load metadata */
sb->s_op = &hfsplus_sops;
sb->s_maxbytes = MAX_LFS_FILESIZE;
@ -417,6 +424,8 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
sb->s_flags |= MS_RDONLY;
}
err = -EINVAL;
/* Load metadata objects (B*Trees) */
sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
if (!sbi->ext_tree) {

4
fs/hfsplus/wrapper.c

@ -141,10 +141,6 @@ int hfsplus_read_wrapper(struct super_block *sb)
if (hfsplus_get_last_session(sb, &part_start, &part_size))
goto out;
if ((u64)part_start + part_size > 0x100000000ULL) {
pr_err("hfs: volumes larger than 2TB are not supported yet\n");
goto out;
}
error = -ENOMEM;
sbi->s_vhdr = kmalloc(HFSPLUS_SECTOR_SIZE, GFP_KERNEL);

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