cvs commit: src/sys/kern vfs_subr.c src/sys/nfsclient nfs_bio.c src/sys/fs/smbfs smbfs_io.c src/sys/fs/nwfs nwfs_io.c

[Stephan Uphoff]

Gleb Smirnoff wrote:
> On Thu, May 25, 2006 at 01:00:36AM +0000, Stephan Uphoff wrote:
> S> ups         2006-05-25 01:00:36 UTC
> S> 
> S>   FreeBSD src repository
> S> 
> S>   Modified files:
> S>     sys/kern             vfs_subr.c 
> S>     sys/nfsclient        nfs_bio.c 
> S>     sys/fs/smbfs         smbfs_io.c 
> S>     sys/fs/nwfs          nwfs_io.c 
> S>   Log:
> S>   Do not set B_NOCACHE on buffers when releasing them in flushbuflist().
> S>   If B_NOCACHE is set the pages of vm backed buffers will be invalidated.
> S>   However clean buffers can be backed by dirty VM pages so invalidating them
> S>   can lead to data loss.
> S>   Add support for flush dirty page in the data invalidation function
> S>   of some network file systems.
> S>   
> S>   This fixes data losses during vnode recycling (and other code paths
> S>   using invalbuf(*,V_SAVE,*,*)) for data written using an mmaped file.
> S>   
> S>   Collaborative effort by: jhb@,mohans@,peter@,ps@,ups@
> S>   Reviewed by:    tegge@
> S>   MFC after:      7 days
>
> Can this be related to reports like this:
>
> http://freebsd.rambler.ru/bsdmail/freebsd-current_curr/msg00282.html
>
>   
I believe that this is unrelated and that the sender of the message 
needs to re-install screen as suggested by
http://freebsd.rambler.ru/bsdmail/freebsd-current_curr/msg00283.html
If I recall correctly this is required due to changes in the pty code.


Stephan