Messages in this thread Patch in this message | | | From | Huaisheng Ye <> | Subject | [PATCH v3 4/6] dax/super: Do not request a pointer kaddr when not required | Date | Mon, 30 Jul 2018 15:15:46 +0800 |
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From: Huaisheng Ye <yehs1@lenovo.com>
Function __bdev_dax_supported doesn't need to get local pointer kaddr from direct_access. Using NULL instead of having to pass in a useless local pointer that caller then just throw away.
Signed-off-by: Huaisheng Ye <yehs1@lenovo.com> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> --- drivers/dax/super.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 45276ab..6e928f3 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -89,7 +89,6 @@ bool __bdev_dax_supported(struct block_device *bdev, int blocksize) struct request_queue *q; pgoff_t pgoff; int err, id; - void *kaddr; pfn_t pfn; long len; char buf[BDEVNAME_SIZE]; @@ -122,7 +121,7 @@ bool __bdev_dax_supported(struct block_device *bdev, int blocksize) } id = dax_read_lock(); - len = dax_direct_access(dax_dev, pgoff, 1, &kaddr, &pfn); + len = dax_direct_access(dax_dev, pgoff, 1, NULL, &pfn); dax_read_unlock(id); put_dax(dax_dev); -- 1.8.3.1
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