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authorBenjamin Coddington <bcodding@redhat.com>2017-04-11 12:50:11 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-04-21 10:45:01 -0400
commitb1ece737f44f91dca8f4829cf0b442e752e406db (patch)
treed0368ec8da45be194c4cde25d46e178ea9060715 /fs/nfs/proc.c
parent7d6ddf88c4db372689c8aa65ea652d0514d66c06 (diff)
downloadlinux-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/proc.c')
-rw-r--r--fs/nfs/proc.c2
1 files changed, 1 insertions, 1 deletions
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 */