Re: [PATCH 0/2] filelock: fix conflict detection with userland file delegations

[Chuck Lever]

On Mon, Dec 1, 2025, at 10:08 AM, Jeff Layton wrote:
> This patchset fixes the way that conflicts are detected when userland
> requests file delegations. The problem is due to a hack that was added
> long ago which worked up until userland could request a file delegation.
>
> This fixes the bug and makes things a bit less hacky. Please consider
> for v6.19.

I would like a little more time to review this carefully, especially
in light of similar work Dai has already posted in this area. If by
"v6.19" you mean "not before v6.19-rcN where N > 3", then that WFM.


> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> Jeff Layton (2):
>       filelock: add lease_dispose_list() helper
>       filelock: allow lease_managers to dictate what qualifies as a conflict
>
>  Documentation/filesystems/locking.rst |   1 +
>  fs/locks.c                            | 119 +++++++++++++++++-----------------
>  fs/nfsd/nfs4layouts.c                 |  11 +++-
>  fs/nfsd/nfs4state.c                   |   7 ++
>  include/linux/filelock.h              |   1 +
>  5 files changed, 79 insertions(+), 60 deletions(-)
> ---
> base-commit: 76c63ff12e067e1ff77b19a83c24774899ed01fc
> change-id: 20251201-dir-deleg-ro-41a16bc22838
>
> Best regards,
> -- 
> Jeff Layton <jlayton@xxxxxxxxxx>

-- 
Chuck Lever