Re: [patch/2.4] ll_rw_blk stomping on bh state [Re: kernel BUG at

[Andrew Morton]

"Stephen C. Tweedie" wrote:
> 
>                 if (maxsector < count || maxsector - count < sector) {
>                         /* Yecch */
>                         bh->b_state &= (1 << BH_Lock) | (1 << BH_Mapped);
> 
> ...
> 
> Folks, just which buffer flags do we want to preserve in this case?
> 

Why do we want to clear any flags in there at all?  To prevent
a storm of error messages from a buffer which has a silly block
number?

If so, how about setting a new state bit which causes subsequent
IO attempts to silently drop the IO on the floor?