locks: convert posix locks to file_lock_context

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Acked-by: Christoph Hellwig <hch@lst.de>

fs/nfs/pagelist.c

@@ -831,12 +831,10 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev,
 	if (prev) {
 		if (!nfs_match_open_context(req->wb_context, prev->wb_context))
 			return false;
-		if (req->wb_context->dentry->d_inode->i_flock != NULL &&
-		    !nfs_match_lock_context(req->wb_lock_context,
-					    prev->wb_lock_context))
-			return false;
 		flctx = req->wb_context->dentry->d_inode->i_flctx;
-		if (flctx != NULL && !list_empty_careful(&flctx->flc_flock) &&
+		if (flctx != NULL &&
+		    !(list_empty_careful(&flctx->flc_posix) &&
+		      list_empty_careful(&flctx->flc_flock)) &&
 		    !nfs_match_lock_context(req->wb_lock_context,
 					    prev->wb_lock_context))
 			return false;