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    Subject[PATCH 5.5 392/399] cifs: log warning message (once) if out of disk space
    Date
    From: Steve French <stfrench@microsoft.com>

    [ Upstream commit d6fd41905ec577851734623fb905b1763801f5ef ]

    We ran into a confusing problem where an application wasn't checking
    return code on close and so user didn't realize that the application
    ran out of disk space. log a warning message (once) in these
    cases. For example:

    [ 8407.391909] Out of space writing to \\oleg-server\small-share

    Signed-off-by: Steve French <stfrench@microsoft.com>
    Reported-by: Oleg Kravtsov <oleg@tuxera.com>
    Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
    Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    fs/cifs/smb2pdu.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
    index 0a3b37abc5e12..6c9497c18f0b8 100644
    --- a/fs/cifs/smb2pdu.c
    +++ b/fs/cifs/smb2pdu.c
    @@ -4029,6 +4029,9 @@ smb2_writev_callback(struct mid_q_entry *mid)
    wdata->cfile->fid.persistent_fid,
    tcon->tid, tcon->ses->Suid, wdata->offset,
    wdata->bytes, wdata->result);
    + if (wdata->result == -ENOSPC)
    + printk_once(KERN_WARNING "Out of space writing to %s\n",
    + tcon->treeName);
    } else
    trace_smb3_write_done(0 /* no xid */,
    wdata->cfile->fid.persistent_fid,
    --
    2.20.1


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