Hi Greg,
Then if userspace opens a file with O_DIRECT but the file is on a
filesytem that can't support full O_DIRECT functionality for the
reasons you give, the kernel could automatically fall back to
O_DIRECT_NO_CACHE.
The solution you are proposing is definitely a good idea, but its not
hi:
2010/10/12 Greg Freemyer greg.freem...@gmail.com:
On Tue, Oct 12, 2010 at 10:48 AM, loody milo...@gmail.com wrote:
hi:
thanks for your kind reply :)
2010/10/12 Greg Freemyer greg.freem...@gmail.com:
On Sun, Oct 10, 2010 at 2:08 PM, loody milo...@gmail.com wrote:
Dear all:
I am so
hi all,
every file have the filesystem specific functions attached with it f_ops.
Is it possible that:: for our module having opened a file say A has a
customized set of operations (initialized in my module) for the time the
file remains in RAM (dcache) and in the fdtable of my module and when
Subject: Re: Learning hardware ...
To: rcpilot2...@gmail.com
Cc: Linux Kernel List kernelnewbies@nl.linux.org
Date: Sunday, October 17, 2010, 11:59 PM
Thanks to all those who replied to my question.
To answer some of the queries in the replies.
I am a software guy, who feel quite confident in
On Tue, Oct 19, 2010 at 11:35 AM, Abu Rasheda rcpilot2...@gmail.com wrote:
Subject: Re: Learning hardware ...
To: rcpilot2...@gmail.com
Cc: Linux Kernel List kernelnewbies@nl.linux.org
Date: Sunday, October 17, 2010, 11:59 PM
Thanks to all those who replied to my question.
To answer some
... read some text book etc before this to have correct context ?
This is a learning challenge -sorry, I cannot provide a magic recipe.
Here is how I tackle such situations:
- Start by writing down a list of your H/W knowledge holes
and begin working it one item at a time.
- Get some
I see a lot of drivers and filesystems using cond_resched. I understand that
this is for voluntary preemption and that this helps interactive
performance. Can someone shed a bit of light on why that is the case and
more importantly, how and where do you decide to call cond_resched (or
Get some related documentation and start reading
I am ready to spend time and money. Any suggestions what can I read ? At this
point I am looking for something which will lay foundation in general for a
software guy, who needs to understand hardware in order to write efficient
code, etc.
You
Any suggestions what can I read ?
Is your list ready ?:o)
1. User Guide - Data Sheet
2. Application Notes
3. Code examples
4. Use Wikipedia to get quick answers and directions.
I assume you have the basics (from what I already know about you).
So, unless you have a very good
On Tue, Oct 19, 2010 at 1:14 PM, Abu Rasheda rcpilot2...@gmail.com wrote:
Get some related documentation and start reading
I am ready to spend time and money. Any suggestions what can I read ? At this
point I am looking for something which will lay foundation in general for a
software guy,
Hi
On Wed, Oct 20, 2010 at 01:30, moussa ba mus...@gmail.com wrote:
I see a lot of drivers and filesystems using cond_resched. I understand that
this is for voluntary preemption and that this helps interactive
performance. Can someone shed a bit of light on why that is the case and
more
Any suggestions what can I read ?
Is your list ready ? :o)
1. User Guide - Data Sheet
2. Application Notes
3. Code examples
4. Use Wikipedia to get quick answers and directions.
Thanks for your suggestions. This is something I can start with.
Victor, I am going to checkout
On Tue, Oct 19, 2010 at 3:16 PM, StephanT stman937-linew...@yahoo.com wrote:
Any suggestions what can I read ?
Is your list ready ? :o)
1. User Guide - Data Sheet
2. Application Notes
3. Code examples
4. Use Wikipedia to get quick answers and directions.
I assume you have the
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