Re: NULL inode->i_mapping in generic_sync_sb_inodes

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Nick Piggin <npiggin@xxxxxxx> writes:

>> hch mentioned that it would be good to instrument to what file system
>> the inode belonged.  Anything else you'd like to look at?
>
> Not too sure. I guess i_state. Maybe you could take s_umount lock
> and see if it is still mounted?
>
> Actually most useful will be to find all places where i_mapping is
> set to NULL, and record in the inode some callchain for the last
> site which set i_mapping to NULL. Dump this stack when you hit the
> bug.

Well, I can't find a single place where i_mapping is set to NULL.  ;-)
I'll see what I can dig up.

Cheers,
Jeff
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