nfs: Drop pointless check from nfs_commit_release_pages()

nfss->writeback is updated only when we are ending page writeback and at
that moment we also clear nfss->write_congested. So there's no point in
rechecking congestion state in nfs_commit_release_pages(). Drop the
pointless check.
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/write.c

@@ -1846,7 +1846,6 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
 	struct nfs_page	*req;
 	int status = data->task.tk_status;
 	struct nfs_commit_info cinfo;
-	struct nfs_server *nfss;
 	struct folio *folio;
 
 	while (!list_empty(&data->pages)) {
@@ -1889,9 +1888,6 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
 		/* Latency breaker */
 		cond_resched();
 	}
-	nfss = NFS_SERVER(data->inode);
-	if (atomic_long_read(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
-		nfss->write_congested = 0;
 
 	nfs_init_cinfo(&cinfo, data->inode, data->dreq);
 	nfs_commit_end(cinfo.mds);