SMB2.1 leases support for CIFS kernel client

Pavel Shilovsky piastryyy at
Wed Aug 10 16:46:50 MDT 2011

2011/8/9 J. Bruce Fields <bfields at>:
> On Tue, Aug 09, 2011 at 09:11:20PM +0400, Pavel Shilovsky wrote:
>> Hi all!
>> I implemented SMB2.1 leases support for cifs kernel module (in my
>> smb2-dev branch -
>> Now open and create work with leases support - it means that we can
>> have several simulаneous opens for the same file and use cache for
>> read and write operations (in the case when we use the same superblock
>> for these opens).
>> Whole list of changes since the last status update:
>> 1) SMB2 oplocks support (open, breaks).
>> 2) SMB2.1 leases support (open, breaks).
>> 3) strictcache i/o support for SMB2.
>> and other minor bugfixes and cleanups.
>> Your comments are appreciated!
> Just a trivial comment: I think that #ifdef CONFIG_CIFS_SMB2 in
> cifs_oplock_beak() is a case where the Linux convention of hiding the
> ifdef with a conditionally-defined function would be a lot cleaner....
> --b.

Thanks for your comment. I rewrote cifs_oplock_break with callbacks
and generic function approach - changes are in my tree.

Best regards,
Pavel Shilovsky.

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