Re: [PATCH RFC] __bd_forget should wait for inodes using the mapping

[viro]

On Fri, Jun 18, 2004 at 10:47:11AM -0400, Chris Mason wrote:
> During writeback, we need to answer the question: "are there dirty pages
> attached to this inode", and the only way to answer it is via the
> address space.
> 
> If bdev inodes don't want other inodes using their address space, they
> shouldn't be setting the i_mapping on other inodes.  Since they are, the
> bdev code needs to be aware that someone else might be using it.

Scheduled for 2.7.1; for now users of ->i_mapping (the fewer of them remain,
the better) have to be aware of bdev.

And yes, ->i_mapping flips on "normal" bdev inodes will go away - we set
->f_mapping on open directly.
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