[dm-devel] [patch 04/11] dm-snap: Remove dead pe_lock spinlock

[Jan Blunck <jblunck suse de>]

Remove the dead pe_lock spinlock.

Signed-off-by: Jan Blunck <jblunck suse de>
---
 drivers/md/dm-snap.c |    1 -
 drivers/md/dm-snap.h |    6 ------
 2 files changed, 7 deletions(-)

--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -469,7 +469,6 @@ static int snapshot_ctr(struct dm_target
 	s->active = 0;
 	s->last_percent = 0;
 	init_rwsem(&s->lock);
-	spin_lock_init(&s->pe_lock);
 	s->table = ti->table;
 
 	/* Allocate hash table for COW data */
--- a/drivers/md/dm-snap.h
+++ b/drivers/md/dm-snap.h
@@ -114,12 +114,6 @@ struct dm_snapshot {
 	struct exception_table pending;
 	struct exception_table complete;
 
-	/*
-	 * pe_lock protects all pending_exception operations and access
-	 * as well as the snapshot_bios list.
-	 */
-	spinlock_t pe_lock;
-
 	/* The on disk metadata handler */
 	struct exception_store store;
 

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