#include <linux/dma-resv.h>
#include <linux/export.h>
+#include <linux/sched/mm.h>
/**
* DOC: Reservation Object Overview
kfree_rcu(list, rcu);
}
+#if IS_ENABLED(CONFIG_LOCKDEP)
+static int __init dma_resv_lockdep(void)
+{
+ struct mm_struct *mm = mm_alloc();
+ struct dma_resv obj;
+
+ if (!mm)
+ return -ENOMEM;
+
+ dma_resv_init(&obj);
+
+ down_read(&mm->mmap_sem);
+ ww_mutex_lock(&obj.lock, NULL);
+ fs_reclaim_acquire(GFP_KERNEL);
+ fs_reclaim_release(GFP_KERNEL);
+ ww_mutex_unlock(&obj.lock);
+ up_read(&mm->mmap_sem);
+
+ mmput(mm);
+
+ return 0;
+}
+subsys_initcall(dma_resv_lockdep);
+#endif
+
/**
* dma_resv_init - initialize a reservation object
* @obj: the reservation object