Re: [PATCH v7 16/22] block: convert to errseq_t based writeback error tracking

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On Tue, Jun 20, 2017 at 01:44:44PM -0400, Jeff Layton wrote:
> In order to query for errors with errseq_t, you need a previously-
> sampled point from which to check. When you call
> filemap_write_and_wait_range though you don't have a struct file and so
> no previously-sampled value.

So can we simply introduce variants of them that take a struct file?
That would be:

 a) less churn
 b) less code
 c) less chance to get data integrity wrong
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