Re: [PATCH v6 12/20] fs: add a new fstype flag to indicate how writeback errors are tracked

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On Thu, 2017-06-15 at 07:57 -0700, Christoph Hellwig wrote:
> On Thu, Jun 15, 2017 at 06:42:12AM -0400, Jeff Layton wrote:
> > Correct.
> > 
> > But if there is a data writeback error, should we report an error on all
> > open fds at that time (like we will for fsync)?
> 
> We should in theory, but I don't see how to properly do it.  In addition
> sync_file_range just can't be used for data integrity to start with, so
> I don't think it's worth it.  At some point we should add a proper
> fsync_range syscall, though.

filemap_report_wb_err will always return 0 if the inode never has
mapping_set_error called on it. So, I think we should be able to do it
there once we get all of the fs' converted over. That'll have to happen
at the end of the series however.

-- 
Jeff Layton <jlayton@xxxxxxxxxx>
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