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 struct super_block *sb = inode->i_sb;
29 printk("minix_bmap: block<0\n");
30 } else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
31 printk("minix_bmap: block>big\n");
32 } else if (block < 7) {
34 } else if ((block -= 7) < 256) {
37 } else if ((block -= 256) < 256*256) {
39 offsets[n++] = block>>8;
40 offsets[n++] = block & 255;
44 offsets[n++] = block>>16;
45 offsets[n++] = (block>>8) & 255;
46 offsets[n++] = block & 255;
51 #include "itree_common.c"
53 int V2_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 V2_minix_truncate(struct inode * inode)
64 unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
66 return nblocks(size, sb);