On Wed, Jul 04, 2001 at 23:42:50 -0700, Mike Smith wrote:
> > On Wed, Jul 04, 2001 at 20:18:51 -0400, Kevin Hui wrote:
> > > Then the question is whether the kernel is copying data between userspace
> > > and kernelspace or whether it just DMAs the data straight in/out of the
> > > user program's
> On Wed, Jul 04, 2001 at 20:18:51 -0400, Kevin Hui wrote:
> > Then the question is whether the kernel is copying data between userspace
> > and kernelspace or whether it just DMAs the data straight in/out of the
> > user program's address space. In Linux raw-io, given that it is a block
> > devi
On Wed, Jul 04, 2001 at 20:18:51 -0400, Kevin Hui wrote:
> Then the question is whether the kernel is copying data between userspace
> and kernelspace or whether it just DMAs the data straight in/out of the
> user program's address space. In Linux raw-io, given that it is a block
> device and you
Then the question is whether the kernel is copying data between userspace
and kernelspace or whether it just DMAs the data straight in/out of the
user program's address space. In Linux raw-io, given that it is a block
device and you are doing page-aligned block I/Os on it, is smart and does
zero
On Wed, Jul 04, 2001 at 17:58:58 -0400, Kevin Hui wrote:
> Hi all,
>
> I'm wondering if *BSD have any support for user programs to access raw
> disk devices, unbuffered. Such support is available under Linux:
>
> http://www.kernel.org/LDP/HOWTO/SCSI-2.4-HOWTO/rawdev.html
> http://www2.linuxjour
Hi all,
I'm wondering if *BSD have any support for user programs to access raw
disk devices, unbuffered. Such support is available under Linux:
http://www.kernel.org/LDP/HOWTO/SCSI-2.4-HOWTO/rawdev.html
http://www2.linuxjournal.com/cgi-bin/linux/man.cgi?mode=search&comm=raw§=1
Any information
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