[lkml]   [2001]   [Nov]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRaw access to block devices
Dear all,

I would like to write a driver for a block device that
is better to be accessed directly without going
through the buffer cache. I read the source code raw.c
and learnt that linux does have raw I/O support.
However, it seems to me that the support only provides
a character device interface to users. Is there a
simple way to maintain the block device interface to
user programs / other parts of the kernel, while
bypassing the buffer cache system?

Since struct block_device_operations does not include
read or write operations, I have considered to
redirect the function pointers in filp->f_op to my own
routines when the device is opened. Is this an
appropriate solution?

Thank you very much. And please kindly correct me if I
am wrong.

Roy Ho

Do You Yahoo!?
Find the one for you at Yahoo! Personals
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:13    [W:0.042 / U:0.972 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site