linux-ext4 - [PATCH 2/9] dax: stop using bdevname

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Date:   Thu, 26 Aug 2021 15:55:03 +0200
From:   Christoph Hellwig <hch@....de>
To:     Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>
Cc:     Mike Snitzer <snitzer@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        linux-xfs@...r.kernel.org, nvdimm@...ts.linux.dev,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: [PATCH 2/9] dax: stop using bdevname

Just use the %pg format specifier instead.

Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/dax/super.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 44736cbd446e..3e6d7e9ee34f 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -73,7 +73,6 @@ bool __generic_fsdax_supported(struct dax_device *dax_dev,
 {
 	bool dax_enabled = false;
 	pgoff_t pgoff, pgoff_end;
-	char buf[BDEVNAME_SIZE];
 	void *kaddr, *end_kaddr;
 	pfn_t pfn, end_pfn;
 	sector_t last_page;
@@ -81,29 +80,25 @@ bool __generic_fsdax_supported(struct dax_device *dax_dev,
 	int err, id;
 
 	if (blocksize != PAGE_SIZE) {
-		pr_info("%s: error: unsupported blocksize for dax\n",
-				bdevname(bdev, buf));
+		pr_info("%pg: error: unsupported blocksize for dax\n", bdev);
 		return false;
 	}
 
 	if (!dax_dev) {
-		pr_debug("%s: error: dax unsupported by block device\n",
-				bdevname(bdev, buf));
+		pr_debug("%pg: error: dax unsupported by block device\n", bdev);
 		return false;
 	}
 
 	err = bdev_dax_pgoff(bdev, start, PAGE_SIZE, &pgoff);
 	if (err) {
-		pr_info("%s: error: unaligned partition for dax\n",
-				bdevname(bdev, buf));
+		pr_info("%pg: error: unaligned partition for dax\n", bdev);
 		return false;
 	}
 
 	last_page = PFN_DOWN((start + sectors - 1) * 512) * PAGE_SIZE / 512;
 	err = bdev_dax_pgoff(bdev, last_page, PAGE_SIZE, &pgoff_end);
 	if (err) {
-		pr_info("%s: error: unaligned partition for dax\n",
-				bdevname(bdev, buf));
+		pr_info("%pg: error: unaligned partition for dax\n", bdev);
 		return false;
 	}
 
@@ -112,8 +107,8 @@ bool __generic_fsdax_supported(struct dax_device *dax_dev,
 	len2 = dax_direct_access(dax_dev, pgoff_end, 1, &end_kaddr, &end_pfn);
 
 	if (len < 1 || len2 < 1) {
-		pr_info("%s: error: dax access failed (%ld)\n",
-				bdevname(bdev, buf), len < 1 ? len : len2);
+		pr_info("%pg: error: dax access failed (%ld)\n",
+				bdev, len < 1 ? len : len2);
 		dax_read_unlock(id);
 		return false;
 	}
@@ -147,8 +142,7 @@ bool __generic_fsdax_supported(struct dax_device *dax_dev,
 	dax_read_unlock(id);
 
 	if (!dax_enabled) {
-		pr_info("%s: error: dax support not enabled\n",
-				bdevname(bdev, buf));
+		pr_info("%pg: error: dax support not enabled\n", bdev);
 		return false;
 	}
 	return true;
-- 
2.30.2