Re: [PATCH] ext2: clear uptodate flag on super block I/O error

[Stephen Hemminger <shemminger@vyatta.com>]

> I think the real fix is to avoid clearing uptodate in case of io errors.
> For read io errors, the buffer/page should not have been uptodate to
> start with, and for write io errors, an error writing back the buffer
> does not mean it is somehow no longer the most uptodate copy of the data.
> 
> Higher level policy about IO errors (whether to retry, ignore, throw
> out the data, etc) would be nice to implement properly too, but that is
> not really the job of the low level cache and IO routines.
> 
> I proposed some patches a while back but didn't get much interest.
> Maybe I should just ask someone to merge them.

I am interested in fixing current releases. But I agree it should be handled
in a general way in future.