Re: [PATCH] CIFS: unlock file across process

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On Mon, Feb 24, 2020 at 11:39:27AM -0800, Pavel Shilovsky wrote:
> вт, 18 февр. 2020 г. в 18:10, Murphy Zhou <jencce.kernel@xxxxxxxxx>:
> >
> > On Fri, Feb 14, 2020 at 11:03:00AM -0800, Pavel Shilovsky wrote:
> > > Also, please make sure that resulting patch works against Windows file
> > > share since the locking semantics may be different there.
> >
> > OK.
> >
> > >
> > > Depending on a kind of lease we have on a file, locks may be cached or
> > > not. We probably don't want to have different behavior for cached and
> > > non-cached locks. Especially given the fact that a lease may be broken
> > > in the middle of app execution and the different behavior will be
> > > applied immediately.
> >
> > Testing new patch with and without cache=none option, both samba
> > and Win2019 server.
> >
> > Thanks very much for reviewing!
> >
> 
> cache=none only affects IO and doesn't change the client behavior
> regarding locks. "nolease" mount option can be used to turn off leases
> and make all locks go to the server.

Great to know! I can't find it in any man page. Doing more tests.

Thanks!

> 
> --
> Best regards,
> Pavel Shilovsky



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