1 #include <linux/buffer_head.h>
4 enum {DIRECT = 7, DEPTH = 4}; /* Have triple indirect */
6 typedef u32 block_t; /* 32 bit, host order */
8 static inline unsigned long block_to_cpu(block_t n)
13 static inline block_t cpu_to_block(unsigned long n)
18 static inline block_t *i_data(struct inode *inode)
20 return (block_t *)minix_i(inode)->u.i2_data;
23 static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
26 char b[BDEVNAME_SIZE];
27 struct super_block *sb = inode->i_sb;
30 printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
31 block, bdevname(sb->s_bdev, b));
32 } else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
33 if (printk_ratelimit())
34 printk("MINIX-fs: block_to_path: "
35 "block %ld too big on dev %s\n",
36 block, bdevname(sb->s_bdev, b));
37 } else if (block < 7) {
39 } else if ((block -= 7) < 256) {
42 } else if ((block -= 256) < 256*256) {
44 offsets[n++] = block>>8;
45 offsets[n++] = block & 255;
49 offsets[n++] = block>>16;
50 offsets[n++] = (block>>8) & 255;
51 offsets[n++] = block & 255;
56 #include "itree_common.c"
58 int V2_minix_get_block(struct inode * inode, long block,
59 struct buffer_head *bh_result, int create)
61 return get_block(inode, block, bh_result, create);
64 void V2_minix_truncate(struct inode * inode)
69 unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
71 return nblocks(size, sb);