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path: root/drivers/md/dm-bio-prison.c
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Diffstat (limited to 'drivers/md/dm-bio-prison.c')
-rw-r--r--drivers/md/dm-bio-prison.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/md/dm-bio-prison.c b/drivers/md/dm-bio-prison.c
index 90a56625245a..bbe22a5dc06b 100644
--- a/drivers/md/dm-bio-prison.c
+++ b/drivers/md/dm-bio-prison.c
@@ -241,6 +241,20 @@ void dm_cell_error(struct dm_bio_prison *prison,
}
EXPORT_SYMBOL_GPL(dm_cell_error);
+void dm_cell_visit_release(struct dm_bio_prison *prison,
+ void (*visit_fn)(void *, struct dm_bio_prison_cell *),
+ void *context,
+ struct dm_bio_prison_cell *cell)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&prison->lock, flags);
+ visit_fn(context, cell);
+ rb_erase(&cell->node, &prison->cells);
+ spin_unlock_irqrestore(&prison->lock, flags);
+}
+EXPORT_SYMBOL_GPL(dm_cell_visit_release);
+
/*----------------------------------------------------------------*/
#define DEFERRED_SET_SIZE 64