Re: [patch] set kiobuf io_count once, instead of increment

[Robert Read]

On Tue, Feb 27, 2001 at 10:50:54PM -0300, Marcelo Tosatti wrote:
> 
> 
> It seems your patch breaks bh allocation failure handling. If
> get_unused_buffer_head() fails, iobuf->io_count never reaches 0, so
> processes waiting on kiobuf_wait_for_io() will block forever.
> 

This is true, but it looks like the brw_kiovec allocation failure
handling is broken already; it's calling __put_unused_buffer_head on
bhs without waiting for them to complete first.  Also, the err won't
be returned if the previous batch of bhs finished ok.  It looks like
brw_kiovec needs some work, but I'm going to need some coffee first...

robert