Last year’s FOSS.IN had a Kernel Workout session, in which i participated and tried to do a task titled ‘implement XFS preallocation ioctls in the VFS’.
Christoph Hellwig helped me understand the problem and I had a preliminary patch ready in the session, which was improved later over email with his and Hari’s help and finally got merged into 2.6.31-rc1 
Here is the patch.
Thanks to FOSS.IN for this opportunity, and thanks to my friends for their support and encouragement 
Hopefully, this wont be the last 
Tags: kernel
A small group of us (Johnny, Nikanth, Suresh and me) met and discussed a paper titled “Design and Implement of Snapshots in Linux Block Level”. Nikanth led today’s _very_ active ~2 hour session. Basic snapshotting techniques were discussed, some possible variations on the ideas presented in the paper were also debated. We looked at dm snapshot, and some related code too. Nikanth and Suresh with their block layer and filesystem knowledge were very helpful in steering discussion.
On the whole it was very enjoyable 2 hours
Tags: kernel, linux
