linux-kernel - Queuing multiple task

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Message-ID: <CAFXDVL8EhVUo9jom_DGEmbSzjA5bUf0iYzGyh-K3AeytL-=VSw@mail.gmail.com>
Date:	Mon, 3 Oct 2011 22:55:16 -0400
From:	Ganesh Karuppur Rajagopalan <ganesh.kr356@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Pallav Bose <pallavbose@...il.com>
Subject: Queuing multiple task_struct structures?

Hi All,

I would like to queue up multiple struct task_structs in my block
device driver. Here, each task_struct would correspond to a userlevel
thread which uses the ioctl() system call to send a userspace buffer
to my block device driver. Once I queue up multiple task_structs, I
would like to keep them on the queue until a particular condition is
met (i.e., the buffer has been written down to the disk).

So, my question is, how do I queue up multiple task_structs, put them
to sleep, and then wake a subset of the queued task_structs when some
condition is met?

Thanks and Regards
Ganesh
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