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From: Jeff Layton <jlayton@redhat.com>
To: trond.myklebust@primarydata.com, Anna.Schumaker@netapp.com
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH v2 07/10] nfs: move nfs4_set_lock_state call into caller
Date: Fri,  9 Sep 2016 14:47:48 -0400	[thread overview]
Message-ID: <1473446870-1831-8-git-send-email-jlayton@redhat.com> (raw)
In-Reply-To: <1473446870-1831-1-git-send-email-jlayton@redhat.com>

We need to have this info set up before adding the waiter to the
waitqueue, so move this out of the _nfs4_proc_setlk and into the
caller. That's more efficient anyway since we don't need to do
this more than once if we end up waiting on the lock.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 fs/nfs/nfs4proc.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 627a9185822f..a50ba7975449 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6135,14 +6135,8 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock
 	struct nfs_inode *nfsi = NFS_I(state->inode);
 	struct nfs4_state_owner *sp = state->owner;
 	unsigned char fl_flags = request->fl_flags;
-	int status = -ENOLCK;
+	int status;
 
-	if (!test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
-		goto out;
-	/* Is this a delegated open? */
-	status = nfs4_set_lock_state(state, request);
-	if (status != 0)
-		goto out;
 	request->fl_flags |= FL_ACCESS;
 	status = locks_lock_inode_wait(state->inode, request);
 	if (status < 0)
@@ -6216,6 +6210,10 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
 
 	if (state == NULL)
 		return -ENOLCK;
+
+	if (!test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
+		return -ENOLCK;
+
 	/*
 	 * Don't rely on the VFS having checked the file open mode,
 	 * since it won't do this for flock() locks.
@@ -6230,6 +6228,10 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
 			return -EBADF;
 	}
 
+	status = nfs4_set_lock_state(state, request);
+	if (status != 0)
+		return status;
+
 	do {
 		status = nfs4_proc_setlk(state, cmd, request);
 		if ((status != -EAGAIN) || IS_SETLK(cmd))
-- 
2.7.4


  parent reply	other threads:[~2016-09-09 18:47 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-09 18:47 [PATCH v2 00/10] nfs: add CB_NOTIFY_LOCK support to nfs client Jeff Layton
2016-09-09 18:47 ` [PATCH v2 01/10] nfs: the length argument to read_buf should be unsigned Jeff Layton
2016-09-09 18:47 ` [PATCH v2 02/10] nfs: eliminate pointless and confusing do_vfs_lock wrappers Jeff Layton
2016-09-09 18:47 ` [PATCH v2 03/10] nfs: check for POSIX lock capability on server even for flock locks Jeff Layton
2016-09-09 18:47 ` [PATCH v2 04/10] nfs: use safe, interruptible sleeps when waiting to retry LOCK Jeff Layton
2016-09-09 18:47 ` [PATCH v2 05/10] nfs: track whether server sets MAY_NOTIFY_LOCK flag Jeff Layton
2016-09-12 20:19   ` Anna Schumaker
2016-09-12 20:30     ` Jeff Layton
2016-09-12 20:38       ` Anna Schumaker
2016-09-09 18:47 ` [PATCH v2 06/10] nfs: add handling for CB_NOTIFY_LOCK in client Jeff Layton
2016-09-09 18:47 ` Jeff Layton [this message]
2016-09-09 18:47 ` [PATCH v2 08/10] nfs: move nfs4 lock retry attempt loop to a separate function Jeff Layton
2016-09-09 18:47 ` [PATCH v2 09/10] nfs: add code to allow client to wait on lock callbacks Jeff Layton
2016-09-09 18:48 ` [PATCH v2 10/10] nfs: ensure that the filehandle in CB_NOTIFY_LOCK request matches the inode Jeff Layton

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