LU-12014 llite: check correct size in ll_dom_finish_open()

[fs/lustre-release.git] / lustre / llite / file.c

diff --git a/lustre/llite/file.c b/lustre/llite/file.c
index d7c1e9e..4420486 100644 (file)
--- a/lustre/llite/file.c
+++ b/lustre/llite/file.c
@@ -412,6 +412,7 @@ void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req,
        struct address_space *mapping = inode->i_mapping;
        struct page *vmpage;
        struct niobuf_remote *rnb;
+       struct mdt_body *body;
        char *data;
        unsigned long index, start;
        struct niobuf_local lnb;
@@ -437,18 +438,19 @@ void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req,
        if (rnb->rnb_offset % PAGE_SIZE)
                RETURN_EXIT;
 
-       /* Server returns whole file or just file tail if it fills in
-        * reply buffer, in both cases total size should be inode size.
+       /* Server returns whole file or just file tail if it fills in reply
+        * buffer, in both cases total size should be equal to the file size.
         */
-       if (rnb->rnb_offset + rnb->rnb_len < i_size_read(inode)) {
-               CERROR("%s: server returns off/len %llu/%u < i_size %llu\n",
+       body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+       if (rnb->rnb_offset + rnb->rnb_len != body->mbo_dom_size) {
+               CERROR("%s: server returns off/len %llu/%u but size %llu\n",
                       ll_i2sbi(inode)->ll_fsname, rnb->rnb_offset,
-                      rnb->rnb_len, i_size_read(inode));
+                      rnb->rnb_len, body->mbo_dom_size);
                RETURN_EXIT;
        }
 
-       CDEBUG(D_INFO, "Get data along with open at %llu len %i, i_size %llu\n",
-              rnb->rnb_offset, rnb->rnb_len, i_size_read(inode));
+       CDEBUG(D_INFO, "Get data along with open at %llu len %i, size %llu\n",
+              rnb->rnb_offset, rnb->rnb_len, body->mbo_dom_size);
 
        data = (char *)rnb + sizeof(*rnb);