1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/buffer_head.h>
3 #include <linux/slab.h>
6 enum {DEPTH
= 3, DIRECT
= 7}; /* Only double indirect */
8 typedef u16 block_t
; /* 16 bit, host order */
10 static inline unsigned long block_to_cpu(block_t n
)
15 static inline block_t
cpu_to_block(unsigned long n
)
20 static inline block_t
*i_data(struct inode
*inode
)
22 return (block_t
*)minix_i(inode
)->u
.i1_data
;
25 static int block_to_path(struct inode
* inode
, long block
, int offsets
[DEPTH
])
30 printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
31 block
, inode
->i_sb
->s_bdev
);
32 } else if (block
>= (minix_sb(inode
->i_sb
)->s_max_size
/BLOCK_SIZE
)) {
33 if (printk_ratelimit())
34 printk("MINIX-fs: block_to_path: "
35 "block %ld too big on dev %pg\n",
36 block
, inode
->i_sb
->s_bdev
);
37 } else if (block
< 7) {
39 } else if ((block
-= 7) < 512) {
45 offsets
[n
++] = block
>>9;
46 offsets
[n
++] = block
& 511;
51 #include "itree_common.c"
53 int V1_minix_get_block(struct inode
* inode
, long block
,
54 struct buffer_head
*bh_result
, int create
)
56 return get_block(inode
, block
, bh_result
, create
);
59 void V1_minix_truncate(struct inode
* inode
)
64 unsigned V1_minix_blocks(loff_t size
, struct super_block
*sb
)
66 return nblocks(size
, sb
);