linux-kernel - [PATCH] block: print symbolic error name instead of error code

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Date: Fri, 12 Jan 2024 00:15:18 +0100
From: Christian Heusel <christian@...sel.eu>
To: Jens Axboe <axboe@...nel.dk>,
	Dave Chinner <dchinner@...hat.com>,
	Jan Kara <jack@...e.cz>,
	Thomas Weißschuh <linux@...ssschuh.net>,
	Christian Brauner <brauner@...nel.org>,
	Min Li <min15.li@...sung.com>,
	Christian Heusel <christian@...sel.eu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Damien Le Moal <dlemoal@...nel.org>,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: dan.carpenter@...aro.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] block: print symbolic error name instead of error code

Utilize the %pe print specifier to get the symbolic error name as a
string (i.e "-ENOMEM") in the log message instead of the error code to
increase its readablility.

This change was suggested in
https://lore.kernel.org/all/92972476-0b1f-4d0a-9951-af3fc8bc6e65@suswa.mountain/

Signed-off-by: Christian Heusel <christian@...sel.eu>
---
 block/partitions/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/partitions/core.c b/block/partitions/core.c
index f47ffcfdfcec..932df4db76f1 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -570,8 +570,8 @@ static bool blk_add_partition(struct gendisk *disk,
 	part = add_partition(disk, p, from, size, state->parts[p].flags,
 			     &state->parts[p].info);
 	if (IS_ERR(part) && PTR_ERR(part) != -ENXIO) {
-		printk(KERN_ERR " %s: p%d could not be added: %ld\n",
-		       disk->disk_name, p, -PTR_ERR(part));
+		printk(KERN_ERR " %s: p%d could not be added: %pe\n",
+		       disk->disk_name, p, part);
 		return true;
 	}
 
-- 
2.43.0