From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Thu, 5 Jul 2018 01:01:16 +0000 (-0400)
Subject: NFS: Ensure we immediately start writeback on rescheduled writes
X-Git-Tag: v4.19-rc1~33^2~45
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=7be7b3ca16a59b8335ef2877f4696cf74f646d20;p=linux.git

NFS: Ensure we immediately start writeback on rescheduled writes

If the writes are being rescheduled due to a pNFS error, then we really
want to immediately start a new flush. The O_DIRECT code already does
this, so we only need to worry about buffered writes.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index a057b4f45a46..586726a590d8 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1406,6 +1406,8 @@ static void nfs_async_write_error(struct list_head *head)
 static void nfs_async_write_reschedule_io(struct nfs_pgio_header *hdr)
 {
 	nfs_async_write_error(&hdr->pages);
+	filemap_fdatawrite_range(hdr->inode->i_mapping, hdr->args.offset,
+			hdr->args.offset + hdr->args.count - 1);
 }
 
 static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = {