__BREAD(9) The Linux VFS __BREAD(9)NAME
__bread - reads a specified block and returns the bh
SYNOPSIS
struct buffer_head * __bread(struct block_device * bdev,
sector_t block, unsigned size);
ARGUMENTS
bdev
the block_device to read from
block
number of block
size
size (in bytes) to read
DESCRIPTION
Reads a specified block, and returns buffer head that contains it. It
returns NULL if the block was unreadable.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 __BREAD(9)