[PATCH v6 03/12] DMA reservations: use the new mmap locking API

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This use is converted manually ahead of the next patch in the series,
as it requires including a new header which the automated conversion
would miss.

Signed-off-by: Michel Lespinasse <walken@xxxxxxxxxx>
Reviewed-by: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Reviewed-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
---
 drivers/dma-buf/dma-resv.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 4264e64788c4..b45f8514dc82 100644
--- 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);
 
-- 
2.26.2.761.g0e0b3e54be-goog





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux