Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / fs / nfs / write.c

diff --git a/kernel/fs/nfs/write.c b/kernel/fs/nfs/write.c
index 7b93164..7a9b6e3 100644 (file)
--- a/kernel/fs/nfs/write.c
+++ b/kernel/fs/nfs/write.c
@@ -1261,6 +1261,9 @@ int nfs_updatepage(struct file *file, struct page *page,
        dprintk("NFS:       nfs_updatepage(%pD2 %d@%lld)\n",
                file, count, (long long)(page_file_offset(page) + offset));
 
+       if (!count)
+               goto out;
+
        if (nfs_can_extend_write(file, page, inode)) {
                count = max(count + offset, nfs_page_length(page));
                offset = 0;
@@ -1271,7 +1274,7 @@ int nfs_updatepage(struct file *file, struct page *page,
                nfs_set_pageerror(page);
        else
                __set_page_dirty_nobuffers(page);
-
+out:
        dprintk("NFS:       nfs_updatepage returns %d (isize %lld)\n",
                        status, (long long)i_size_read(inode));
        return status;