4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Trond Myklebust trond.myklebust@hammerspace.com
commit 8127d82705998568b52ac724e28e00941538083d upstream.
If the I/O completion failed with a fatal error, then we should just exit nfs_pageio_complete_mirror() rather than try to recoalesce.
Fixes: a7d42ddb3099 ("nfs: add mirroring support to pgio layer") Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Cc: stable@vger.kernel.org # v4.0+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/nfs/pagelist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -1202,7 +1202,7 @@ static void nfs_pageio_complete_mirror(s desc->pg_mirror_idx = mirror_idx; for (;;) { nfs_pageio_doio(desc); - if (!mirror->pg_recoalesce) + if (desc->pg_error < 0 || !mirror->pg_recoalesce) break; if (!nfs_do_recoalesce(desc)) break;