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    Subject[PATCH 4.9 103/118] NFS: Dont recoalesce on error in nfs_pageio_complete_mirror()
    Date
    4.9-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
    @@ -1200,7 +1200,7 @@ 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;

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