RAW driver (/dev/raw/rawN)

modulename: raw.ko

configname: CONFIG_RAW_DRIVER

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>RAW driver (/dev/raw/rawN)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
The raw driver permits block devices to be bound to /dev/raw/rawN.
Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
See the raw(8) manpage for more details.

Applications should preferably open the device (eg /dev/hda1)
with the O_DIRECT flag.

source code:
depends
CONFIG_BLOCK