From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- fs/minix/itree_v2.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 fs/minix/itree_v2.c (limited to 'fs/minix/itree_v2.c') diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c new file mode 100644 index 00000000000..3adc7675560 --- /dev/null +++ b/fs/minix/itree_v2.c @@ -0,0 +1,66 @@ +#include +#include "minix.h" + +enum {DIRECT = 7, DEPTH = 4}; /* Have triple indirect */ + +typedef u32 block_t; /* 32 bit, host order */ + +static inline unsigned long block_to_cpu(block_t n) +{ + return n; +} + +static inline block_t cpu_to_block(unsigned long n) +{ + return n; +} + +static inline block_t *i_data(struct inode *inode) +{ + return (block_t *)minix_i(inode)->u.i2_data; +} + +static int block_to_path(struct inode * inode, long block, int offsets[DEPTH]) +{ + int n = 0; + + if (block < 0) { + printk("minix_bmap: block<0"); + } else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) { + printk("minix_bmap: block>big"); + } else if (block < 7) { + offsets[n++] = block; + } else if ((block -= 7) < 256) { + offsets[n++] = 7; + offsets[n++] = block; + } else if ((block -= 256) < 256*256) { + offsets[n++] = 8; + offsets[n++] = block>>8; + offsets[n++] = block & 255; + } else { + block -= 256*256; + offsets[n++] = 9; + offsets[n++] = block>>16; + offsets[n++] = (block>>8) & 255; + offsets[n++] = block & 255; + } + return n; +} + +#include "itree_common.c" + +int V2_minix_get_block(struct inode * inode, long block, + struct buffer_head *bh_result, int create) +{ + return get_block(inode, block, bh_result, create); +} + +void V2_minix_truncate(struct inode * inode) +{ + truncate(inode); +} + +unsigned V2_minix_blocks(loff_t size) +{ + return nblocks(size); +} -- cgit v1.2.3