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    Subject[PATCH 4.8 093/140] fs/cifs: keep guid when assigning fid to fileinfo
    Date
    4.8-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Aurelien Aptel <aaptel@suse.com>

    commit 94f873717571c759b7928399cbbddfa3d569bd01 upstream.

    When we open a durable handle we give a Globally Unique
    Identifier (GUID) to the server which we must keep for later reference
    e.g. when reopening persistent handles on reconnection.

    Without this the GUID generated for a new persistent handle was lost and
    16 zero bytes were used instead on re-opening.

    Signed-off-by: Aurelien Aptel <aaptel@suse.com>
    Signed-off-by: Steve French <smfrench@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/cifs/smb2ops.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/fs/cifs/smb2ops.c
    +++ b/fs/cifs/smb2ops.c
    @@ -541,6 +541,7 @@ smb2_set_fid(struct cifsFileInfo *cfile,
    server->ops->set_oplock_level(cinode, oplock, fid->epoch,
    &fid->purge_cache);
    cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
    + memcpy(cfile->fid.create_guid, fid->create_guid, 16);
    }

    static void

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