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SubjectRe: Testing for dirty buffers on a block device
On Wed, 24 Feb 2010, Jens Axboe wrote:

> > > But if you wanted, I guess the only way would be to lookup
> > > dirty/writeback pages on the bdev inode mapping. For that you'd need the
> > > bdev, not the gendisk or the queue though.
> >
> > I can get the bdev from the gendisk by calling bdget_disk() with a
> > partition number of 0, right? What would the next step be? Would this
> > check for dirty pages associated with any of the partitions or would it
> > only look at pages associated with the inode for the entire disk?
>
> It would cover the entire bdev.

Okay, so once I've got the bdev, how do I look up the dirty/writeback
pages on the inode mapping?

Alan Stern



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