From 3714b91362669c4d3e281acfe197e922a1dd1b4a Mon Sep 17 00:00:00 2001 From: Coly Li Date: Thu, 3 Sep 2020 12:25:13 +0800 Subject: [PATCH] dax: fix for do not print error message for non-persistent memory block device When calling __generic_fsdax_supported(), a dax-unsupported device may not have dax_dev as NULL. Therefore even dax_dev is not NULL, it is still necessary to call bdev_dax_supported() to check whether the device supports dax. Signed-off-by: Coly Li --- drivers/dax/super.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 32642634c1bb..a5bdfca0529a 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -100,7 +100,9 @@ bool __generic_fsdax_supported(struct dax_device *dax_dev, return false; } - if (!dax_dev && !bdev_dax_supported(bdev, blocksize)) { + pr_info("dax_dev: %p\n", dax_dev); + pr_info("bdev_dax_supported(): %d\n", bdev_dax_supported(bdev, blocksize)); + if (!dax_dev || !bdev_dax_supported(bdev, blocksize)) { pr_debug("%s: error: dax unsupported by block device\n", bdevname(bdev, buf)); return false; -- 2.26.2