On Thu, Sep 12, 2024 at 03:48:09PM +0100, John Garry wrote: > > I actually now think that I should change bio_split() to return NULL for > splitting a REQ_ATOMIC, like what do for ZONE_APPEND - calling bio_split() > like this is a common pattern in md RAID personalities. However, none of > the md RAID code check for a NULL split, which they really should, so I can > make that change also. bio_split is a bit of a mess - even NULL isn't very good at returning what caused it to fail. Maybe a switch to ERR_PTR and an audit of all callers might be a good idea.
