static bool_t translate(ext2fs_st *st,
struct inode *ino,
const FileIO_Request *req,
USD_Extent *extent)
{
FileIO_Block blockno = 0, tmp, last;
uint32_t nblocks;
last = blockno = ext2_bmap(st, ino, req->blockno);
for (nblocks = 1; nblocks < req->nblocks; nblocks++) {
tmp = ext2_bmap(st, ino, req->blockno+nblocks);
if (tmp != last+1) break;
last = tmp;
}
TRC(printf("(%d,%d)->%d(%d)\n", ino->i_ino,
req->blockno, blockno, nblocks));
extent->base = blockno;
extent->len = nblocks;
return True;
}
/*
* Map a logical sector and load it into the cache
*/
static const void *
ext2_get_cache(struct inode *inode, block_t lblock)
{
block_t pblock = ext2_bmap(inode, lblock, NULL);
return get_cache(inode->fs->fs_dev, pblock);
}
