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| author | Benjamin Coddington <bcodding@redhat.com> | 2017-04-11 12:50:11 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-21 10:45:01 -0400 |
| commit | b1ece737f44f91dca8f4829cf0b442e752e406db (patch) | |
| tree | d0368ec8da45be194c4cde25d46e178ea9060715 /fs/nfs | |
| parent | 7d6ddf88c4db372689c8aa65ea652d0514d66c06 (diff) | |
| download | linux-b1ece737f44f91dca8f4829cf0b442e752e406db.tar.bz2 | |
lockd: Introduce nlmclnt_operations
NFS would enjoy the ability to modify the behavior of the NLM client's
unlock RPC task in order to delay the transmission of the unlock until IO
that was submitted under that lock has completed. This ability can ensure
that the NLM client will always complete the transmission of an unlock even
if the waiting caller has been interrupted with fatal signal.
For this purpose, a pointer to a struct nlmclnt_operations can be assigned
in a nfs_module's nfs_rpc_ops that will install those nlmclnt_operations on
the nlm_host. The struct nlmclnt_operations defines three callback
operations that will be used in a following patch:
nlmclnt_alloc_call - used to call back after a successful allocation of
a struct nlm_rqst in nlmclnt_proc().
nlmclnt_unlock_prepare - used to call back during NLM unlock's
rpc_call_prepare. The NLM client defers calling rpc_call_start()
until this callback returns false.
nlmclnt_release_call - used to call back when the NLM client's struct
nlm_rqst is freed.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/client.c | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs3proc.c | 2 | ||||
| -rw-r--r-- | fs/nfs/proc.c | 2 |
3 files changed, 3 insertions, 2 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 3e7b2e6a7cfb..e0302101e18a 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -546,6 +546,7 @@ static int nfs_start_lockd(struct nfs_server *server) .noresvport = server->flags & NFS_MOUNT_NORESVPORT ? 1 : 0, .net = clp->cl_net, + .nlmclnt_ops = clp->cl_nfs_mod->rpc_ops->nlmclnt_ops, }; if (nlm_init.nfs_version > 3) diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index dc925b531f32..03b3c3de28f1 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -870,7 +870,7 @@ nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) { struct inode *inode = file_inode(filp); - return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); + return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, NULL); } static int nfs3_have_delegation(struct inode *inode, fmode_t flags) diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index b7bca8303989..9872cf676a50 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -638,7 +638,7 @@ nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) { struct inode *inode = file_inode(filp); - return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); + return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, NULL); } /* Helper functions for NFS lock bounds checking */ |