Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: fix deadlock in blk_abort_queue() for drivers that readd to timeout list
  block: fix booting from partitioned md array
  block: revert part of 18ce3751ccd488c78d3827e9f6bf54e6322676fb
  cciss: PCI power management reset for kexec
  paride/pg.c: xs(): &&/|| confusion
  fs/bio: bio_alloc_bioset: pass right object ptr to mempool_free
  block: fix bad definition of BIO_RW_SYNC
  bsg: Fix sense buffer bug in SG_IO

1 files changed, 8 insertions, 1 deletions

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index a09535377a94..bbbdc4b8ccf2 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -209,12 +209,19 @@ void blk_abort_queue(struct request_queue *q)
 {
         unsigned long flags;
         struct request *rq, *tmp;
+        LIST_HEAD(list);
 
         spin_lock_irqsave(q->queue_lock, flags);
 
         elv_abort_queue(q);
 
-        list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list)
+        /*
+         * Splice entries to local list, to avoid deadlocking if entries
+         * get readded to the timeout list by error handling
+         */
+        list_splice_init(&q->timeout_list, &list);
+
+        list_for_each_entry_safe(rq, tmp, &list, timeout_list)
                 blk_abort_request(rq);
 
         spin_unlock_irqrestore(q->queue_lock, flags);