Re: [patch] [possible race in ext2] Re: how to write get_block?

Benjamin C.R. LaHaise (blah@kvack.org)
Tue, 12 Oct 1999 13:04:59 -0400 (EDT)


G'day!

On Tue, 12 Oct 1999, Stephen C. Tweedie wrote:
...
> Andrea, you are just trying to relax carefully designed buffer cache
> semantics which are relied upon by the current filesystems. Saying it
> is a trick doesn't help matters much.

Andrea's right in that the semantics make it far too easy to introduce
bugs. How about making bforget set a flag that the buffer head is to be
destroyed as soon as it's released? If a filesystem re-uses the buffer,
mark_buffer_dirty can clear this destroyed flag (to handle the case where
a buffer head becomes legitimately reused).

-ben

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/