__bread(9) centos man page | unix.com

__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.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014								__BREAD(9)