[Xen-changelog] Remove dead code from blkback.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User akw27@xxxxxxxxxxxxxxxxxxxxxx
# Node ID dc8380497e98c1d562cb3d9b5f60b9972c1005bc
# Parent  6721abf6b16d6df6549f2f5b0a76468c10a71bee
Remove dead code from blkback.

Signed-off-by: Andrew Warfield <andrew.warfield@xxxxxxxxxxxx>

diff -r 6721abf6b16d -r dc8380497e98 
linux-2.6-xen-sparse/drivers/xen/blkback/common.h
--- a/linux-2.6-xen-sparse/drivers/xen/blkback/common.h Sun Aug 21 11:41:45 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/common.h Sun Aug 21 12:24:21 2005
@@ -53,7 +53,7 @@
     rb_root_t         vbd_rb;        /* Mapping from 16-bit vdevices to VBDs.*/
     spinlock_t        vbd_lock;      /* Protects VBD mapping. */
     /* Private fields. */
-    enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
+    enum { DISCONNECTED, CONNECTED } status;
     /*
      * DISCONNECT response is deferred until pending requests are ack'ed.
      * We therefore need to store the id from the original request.
diff -r 6721abf6b16d -r dc8380497e98 
linux-2.6-xen-sparse/drivers/xen/blkback/interface.c
--- a/linux-2.6-xen-sparse/drivers/xen/blkback/interface.c      Sun Aug 21 
11:41:45 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/interface.c      Sun Aug 21 
12:24:21 2005
@@ -7,7 +7,6 @@
  */
 
 #include "common.h"
-#include <asm-xen/ctrl_if.h>
 #include <asm-xen/evtchn.h>
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
@@ -138,52 +137,6 @@
     return 0;
 }
 
-static void __blkif_disconnect_complete(void *arg)
-{
-    blkif_t              *blkif = (blkif_t *)arg;
-    ctrl_msg_t            cmsg;
-    blkif_be_disconnect_t disc;
-
-    /*
-     * These can't be done in blkif_disconnect() because at that point there
-     * may be outstanding requests at the disc whose asynchronous responses
-     * must still be notified to the remote driver.
-     */
-    unmap_frontend_page(blkif);
-    vfree(blkif->blk_ring.sring);
-
-    /* Construct the deferred response message. */
-    cmsg.type         = CMSG_BLKIF_BE;
-    cmsg.subtype      = CMSG_BLKIF_BE_DISCONNECT;
-    cmsg.id           = blkif->disconnect_rspid;
-    cmsg.length       = sizeof(blkif_be_disconnect_t);
-    disc.domid        = blkif->domid;
-    disc.blkif_handle = blkif->handle;
-    disc.status       = BLKIF_BE_STATUS_OKAY;
-    memcpy(cmsg.msg, &disc, sizeof(disc));
-
-    /*
-     * Make sure message is constructed /before/ status change, because
-     * after the status change the 'blkif' structure could be deallocated at
-     * any time. Also make sure we send the response /after/ status change,
-     * as otherwise a subsequent CONNECT request could spuriously fail if
-     * another CPU doesn't see the status change yet.
-     */
-    mb();
-    BUG_ON(blkif->status != DISCONNECTING);
-    blkif->status = DISCONNECTED;
-    mb();
-
-    /* Send the successful response. */
-    ctrl_if_send_response(&cmsg);
-}
-
-void blkif_disconnect_complete(blkif_t *blkif)
-{
-    INIT_WORK(&blkif->work, __blkif_disconnect_complete, (void *)blkif);
-    schedule_work(&blkif->work);
-}
-
 void free_blkif(blkif_t *blkif)
 {
     blkif_t     **pblkif;

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