1 files changed, 8 insertions, 0 deletions

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index a1d1de7b97c5..932c6cc27a76 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -823,6 +823,14 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev,
                         return false;
                 if (req_offset(req) != req_offset(prev) + prev->wb_bytes)
                         return false;
+                if (req->wb_page == prev->wb_page) {
+                        if (req->wb_pgbase != prev->wb_pgbase + prev->wb_bytes)
+                                return false;
+                } else {
+                        if (req->wb_pgbase != 0 ||
+                            prev->wb_pgbase + prev->wb_bytes != PAGE_CACHE_SIZE)
+                                return false;
+                }
         }
         size = pgio->pg_ops->pg_test(pgio, prev, req);
         WARN_ON_ONCE(size > req->wb_bytes);