On Mon, Feb 19, 2007 at 11:58:16PM +0300, Ananiev, Leonid I wrote:
> > while triggering EIO in invalidate_inode_pages2_range()
> ...
> > With this patch aio-stress sees -EIO.
>
> Actually if invalidate_inode_pages2_range() returns EIO it means
> that internal kernel synchronization conflict was happen.
> It is reported to user as hardware IO error.
> Iteration in synchronization process could be performed instead.
>
aio is not responsible for this particular synchronization. Those fixes
(if we make them) should come from other places. The patch is important
to get aio error handling right.
I would argue that one common cause of the EIO is userland
error (mmap concurrent with O_DIRECT), and EIO is the correct answer.
-chris
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