NFS: remove l_pid field from nfs_lockowner

this field is not used in any important way and probably should
have been removed by

Commit: 8003d3c4aaa5 ("nfs4: treat lock owners as opaque values")

which removed the pid argument from nfs4_get_lock_state.

Except in unusual and uninteresting cases, two threads with the same
->tgid will have the same ->files pointer, so keeping them both
for comparison brings no benefit.

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 3575e3408bd7..fd9913249713 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -703,7 +703,6 @@ static void nfs_init_lock_context(struct nfs_lock_context *l_ctx)
 {
 	atomic_set(&l_ctx->count, 1);
 	l_ctx->lockowner.l_owner = current->files;
-	l_ctx->lockowner.l_pid = current->tgid;
 	INIT_LIST_HEAD(&l_ctx->list);
 	atomic_set(&l_ctx->io_count, 0);
 }
@@ -716,8 +715,6 @@ static struct nfs_lock_context *__nfs_find_lock_context(struct nfs_open_context
 	do {
 		if (pos->lockowner.l_owner != current->files)
 			continue;
-		if (pos->lockowner.l_pid != current->tgid)
-			continue;
 		atomic_inc(&pos->count);
 		return pos;
 	} while ((pos = list_entry(pos->list.next, typeof(*pos), list)) != head);