General questions

General questions

[Allen, Jack]

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Hello: 
        This list is named dm-devel, so is there another list to ask
general question about multiplath.conf and related things?

        In other words I want to ask some questions about how to
configure multipath for better performance and basically how some things
work in general, not make changes to code.

----- 
Jack Allen 


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Re: General questions

[Malahal Naineni]

Allen, Jack [Jack.Allen@mckesson.com] wrote:
>    Hello:
>            This list is named dm-devel, so is there another list to ask
>    general question about multiplath.conf and related things?
> 
>            In other words I want to ask some questions about how to configure
>    multipath for better performance and basically how some things work in
>    general, not make changes to code.

This list is probably the best list to ask multipath questions as
well.

General questions

[Jean Delvare]

Hi Greg,

A few questions if you don't mind:

1* Where again can I see the patches for the 2.6 i2c subsystem as you
apply them? I thought it was somewhere in http://linuxusb.bkbits.net/ but
I can't see anything these days, although you say you have applied a
dozen patches.

2* Wouldn't it be time to send what you have to Linus? I count no less
than 18 patches (and I think I have one or two more for you), would be
great if at least some of them could be in 2.6.2-pre1.

3* Is there a chance that the i2c subsystem could be moved one level
down in the configure tree? I wonder why we live in "Character Devices".
The i2c subsystem is big enough to have its own subdirectory, so I would
expect it to appear in "Device Drivers" directly.

Thanks.

-- 
Jean Delvare
http://www.ensicaen.ismra.fr/~delvare/

General questions

[Jean Delvare]

> Oops, I moved my bk trees, and didn't tell anyone :(
> 
> The tree previously at bk://linuxusb.bkbits.net/usb-2.5 is now at:
> 	bk://kernel.bkbits.net/home/gregkh/linux/gregkh-2.6
> I don't know if there is web access to that tree or not, sorry.

Don't think there is. I think this leaves me no other choice than to
give a try to bitkeeper. I guess it can't hurt, anyway.

> I'm also staging the i2c patches to send off to Linus at:
> 	bk://kernel.bkbits.net/home/gregkh/linux/i2c-2.6

This is what I would be primarily interested in.

> > 3* Is there a chance that the i2c subsystem could be moved one level
> > down in the configure tree? I wonder why we live in "Character
> > Devices". The i2c subsystem is big enough to have its own
> > subdirectory, so I would expect it to appear in "Device Drivers"
> > directly.
> 
> Heh, I had that same idea a few days ago, and already did it in my
> trees with the following patch.

Perfect :)

-- 
Jean Delvare
http://www.ensicaen.ismra.fr/~delvare/

General questions

[Greg KH]

On Sun, Jan 18, 2004 at 12:50:25PM +0100, Jean Delvare wrote:
> A few questions if you don't mind:

No problem.  I'll go apply your patches later today or tomorrow, so
don't think I'm ignoring them.

> 1* Where again can I see the patches for the 2.6 i2c subsystem as you
> apply them? I thought it was somewhere in http://linuxusb.bkbits.net/ but
> I can't see anything these days, although you say you have applied a
> dozen patches.

Oops, I moved my bk trees, and didn't tell anyone :(

The tree previously at bk://linuxusb.bkbits.net/usb-2.5 is now at:
	bk://kernel.bkbits.net/home/gregkh/linux/gregkh-2.6
I don't know if there is web access to that tree or not, sorry.

I'm also staging the i2c patches to send off to Linus at:
	bk://kernel.bkbits.net/home/gregkh/linux/i2c-2.6

> 2* Wouldn't it be time to send what you have to Linus? I count no less
> than 18 patches (and I think I have one or two more for you), would be
> great if at least some of them could be in 2.6.2-pre1.

Oh yeah, it's beyond time.  Just that Linus has been in australia for
linux.conf.au this past week or so.  When he gets back (don't know when
that will be yet) I will send him the tree.

> 3* Is there a chance that the i2c subsystem could be moved one level
> down in the configure tree? I wonder why we live in "Character Devices".
> The i2c subsystem is big enough to have its own subdirectory, so I would
> expect it to appear in "Device Drivers" directly.

Heh, I had that same idea a few days ago, and already did it in my trees
with the following patch.

thanks,

greg k-h


 Date: 15 Jan 2004 10:33:34 -08:00
 Subject: I2C: move the Kconfig "source..." out of the drivers/char/ location

diff -Nru a/drivers/Kconfig b/drivers/Kconfig
--- a/drivers/Kconfig	Sun Jan 18 10:47:04 2004
+++ b/drivers/Kconfig	Sun Jan 18 10:47:04 2004
@@ -38,6 +38,8 @@
 
 source "drivers/char/Kconfig"
 
+source "drivers/i2c/Kconfig"
+
 # source "drivers/misc/Kconfig"
 
 source "drivers/media/Kconfig"
diff -Nru a/drivers/char/Kconfig b/drivers/char/Kconfig
--- a/drivers/char/Kconfig	Sun Jan 18 10:47:04 2004
+++ b/drivers/char/Kconfig	Sun Jan 18 10:47:04 2004
@@ -588,8 +588,6 @@
 	bool "Support for console on line printer"
 	depends on PC9800_OLDLP
 
-source "drivers/i2c/Kconfig"
-
 
 menu "Mice"
 

General Questions

[Anupama Gujran]

1. In tcp_prequeue, why does the bh queue the packet in the prequeue and 
exits if ucopy.memory < socket's rcvbuf?
What is the relavence between the two?

2. TCP_CHECK_TIMER is a macro which is defined as follows

#define TCP_CHECK_TIMER(sk) do { } while (0);

What is the meaning of this statement? i.e., purpose of this dummy loop.

Your reply will be appreciated.

Thank you.
Anu



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