From: Dai Ngo <dai.ngo@oracle.com>
To: chuck.lever@oracle.com, jlayton@kernel.org
Cc: linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 0/4] NFSD: add support for NFSv4 write delegation
Date: Thu, 11 May 2023 14:42:59 -0700 [thread overview]
Message-ID: <1683841383-21372-1-git-send-email-dai.ngo@oracle.com> (raw)
The NFSv4 server currently supports read delegation using VFS lease
which is implemented using file_lock.
This patch series add write delegation support for NFSv4 server by:
. remove the check for F_WRLCK in generic_add_lease to allow
file_lock to be used for write delegation.
. grant write delegation for OPEN with NFS4_SHARE_ACCESS_WRITE
if there is no conflict with other OPENs.
. add XDR support for sending and receiving CB_GETATTR.
. handle GETATTR from another client on a file that has outstanding
write delegation by using CB_GETATTR to get the latest change_info
and size for the GETATTR reply.
Write delegation conflict with another OPEN, REMOVE, RENAME and SETATTR
are handled the same as read delegation using notify_change, try_break_deleg.
next reply other threads:[~2023-05-11 21:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-11 21:42 Dai Ngo [this message]
2023-05-11 21:43 ` [PATCH 1/4] locks: allow support for write delegation Dai Ngo
2023-05-11 21:43 ` [PATCH 2/4] NFSD: enable " Dai Ngo
2023-05-11 21:43 ` [PATCH 3/4] NFSD: add supports for CB_GETATTR callback Dai Ngo
2023-05-12 15:30 ` Chuck Lever III
2023-05-12 17:41 ` dai.ngo
2023-05-11 21:43 ` [PATCH 4/4] NFSD: handle GETATTR conflict with write delegation Dai Ngo
2023-05-12 14:05 ` kernel test robot
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