DMA reservations: use the new mmap locking API

[mirror_ubuntu-hirsute-kernel.git] / drivers / dma-buf / dma-resv.c

diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 4264e64788c4639ea260d949038d9e85d5b8467d..b45f8514dc8267c9ed3c46d7e61361fa98eb62ac 100644 (file)
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -34,6 +34,7 @@
 
 #include <linux/dma-resv.h>
 #include <linux/export.h>
+#include <linux/mm.h>
 #include <linux/sched/mm.h>
 
 /**
@@ -109,7 +110,7 @@ static int __init dma_resv_lockdep(void)
 
        dma_resv_init(&obj);
 
-       down_read(&mm->mmap_sem);
+       mmap_read_lock(mm);
        ww_acquire_init(&ctx, &reservation_ww_class);
        ret = dma_resv_lock(&obj, &ctx);
        if (ret == -EDEADLK)
@@ -118,7 +119,7 @@ static int __init dma_resv_lockdep(void)
        fs_reclaim_release(GFP_KERNEL);
        ww_mutex_unlock(&obj.lock);
        ww_acquire_fini(&ctx);
-       up_read(&mm->mmap_sem);
+       mmap_read_unlock(mm);
        
        mmput(mm);