From: Maurizio Lombardi mlombard@redhat.com
[ Upstream commit c024b226a417c4eb9353ff500b1c823165d4d508 ]
Submit I/O requests with the IOCB_NOWAIT flag set only if the underlying filesystem supports it.
Fixes: 50a909db36f2 ("nvmet: use IOCB_NOWAIT for file-ns buffered I/O") Signed-off-by: Maurizio Lombardi mlombard@redhat.com Reviewed-by: Chaitanya Kulkarni kch@nvidia.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/target/io-cmd-file.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/target/io-cmd-file.c b/drivers/nvme/target/io-cmd-file.c index b575997244482..c81690b2a681b 100644 --- a/drivers/nvme/target/io-cmd-file.c +++ b/drivers/nvme/target/io-cmd-file.c @@ -8,6 +8,7 @@ #include <linux/uio.h> #include <linux/falloc.h> #include <linux/file.h> +#include <linux/fs.h> #include "nvmet.h"
#define NVMET_MAX_MPOOL_BVEC 16 @@ -266,7 +267,8 @@ static void nvmet_file_execute_rw(struct nvmet_req *req)
if (req->ns->buffered_io) { if (likely(!req->f.mpool_alloc) && - nvmet_file_execute_io(req, IOCB_NOWAIT)) + (req->ns->file->f_mode & FMODE_NOWAIT) && + nvmet_file_execute_io(req, IOCB_NOWAIT)) return; nvmet_file_submit_buffered_io(req); } else