[Xen-changelog] Stupidly forgot there is a separate waitqueue for free pending request

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

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 8031bf331472d3150ac3ef934922a5cc05e22c84
# Parent  937336f98c47148e82f5624a33334db3b4a40417
Stupidly forgot there is a separate waitqueue for free pending request
structures in blkback. Fix my changes to blkif_schedule().

Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r 937336f98c47 -r 8031bf331472 
linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c
--- a/linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c        Thu Apr  6 
09:20:32 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c        Thu Apr  6 
10:13:33 2006
@@ -225,8 +225,11 @@
        while (!kthread_should_stop()) {
                wait_event_interruptible(
                        blkif->wq,
-                       (atomic_read(&blkif->io_pending) &&
-                        !list_empty(&pending_free)) ||
+                       atomic_read(&blkif->io_pending) ||
+                       kthread_should_stop());
+               wait_event_interruptible(
+                       pending_free_wq,
+                       !list_empty(&pending_free) ||
                        kthread_should_stop());
 
                atomic_set(&blkif->io_pending, 0);

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