[PATCH v2 4/6] aio: Fix fallback I/O priority value

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For cases when the application does not specify aio_reqprio for an aio,
fallback to use get_current_ioprio() to obtain the task I/O priority
last set using ioprio_set() rather than the hardcoded IOPRIO_CLASS_NONE
value.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
Reviewed-by: Adam Manzanares <adam.manzanares@xxxxxxx>
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
---
 fs/aio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/aio.c b/fs/aio.c
index 301e6314183b..b984918be4b7 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1441,7 +1441,7 @@ static int aio_prep_rw(struct kiocb *req, struct iocb *iocb)
 
 		req->ki_ioprio = iocb->aio_reqprio;
 	} else
-		req->ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0);
+		req->ki_ioprio = get_current_ioprio();
 
 	ret = kiocb_set_rw_flags(req, iocb->aio_rw_flags);
 	if (unlikely(ret))
-- 
2.19.1




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