From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Fam Zheng <famz@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
Keith Busch <keith.busch@intel.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@lists.ozlabs.org,
"Michael S. Tsirkin" <mst@redhat.com>,
linux-block@vger.kernel.org,
Brian Norris <computersforpeace@gmail.com>,
Paul Mackerras <paulus@samba.org>,
linux-mtd@lists.infradead.org, "Ed L. Cashin" <ed.cashin@acm.org>,
Jens Axboe <axboe@kernel.dk>, Minchan Kim <minchan@kernel.org>,
virtualization@lists.linux-foundation.org,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Nitin Gupta <ngupta@vflare.org>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH 11/15] zram: Pass attribute group to device_add_disk
Date: Thu, 18 Aug 2016 10:59:01 +0900 [thread overview]
Message-ID: <20160818015901.GA499@swordfish> (raw)
In-Reply-To: <1471418115-3654-12-git-send-email-famz@redhat.com>
Hello,
On (08/17/16 15:15), Fam Zheng wrote:
[..]
> diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
> index 20920a2..2331788 100644
> --- a/drivers/block/zram/zram_drv.c
> +++ b/drivers/block/zram/zram_drv.c
> @@ -1298,13 +1298,10 @@ static int zram_add(void)
> zram->disk->queue->limits.discard_zeroes_data = 0;
> queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, zram->disk->queue);
>
> - device_add_disk(NULL, zram->disk, NULL);
> + ret = device_add_disk(NULL, zram->disk, &zram_disk_attr_group);
>
> - ret = sysfs_create_group(&disk_to_dev(zram->disk)->kobj,
> - &zram_disk_attr_group);
> if (ret < 0) {
> - pr_err("Error creating sysfs group for device %d\n",
> - device_id);
> + pr_err("Error creating disk %d\n", device_id);
> goto out_free_disk;
> }
> strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
I like the previous "Error creating sysfs group for device" string better,
than "Error creating disk", because the latter one is much less informative.
do you want to do something like below?
int device_add_disk(struct device *parent, struct gendisk *disk,
...
if (attr_group) {
retval = sysfs_create_group(&disk_to_dev(disk)->kobj,
attr_group);
+ pr_err("Error creating sysfs group for device ...\n", ...);
if (retval)
goto fail;
}
-ss
next prev parent reply other threads:[~2016-08-18 1:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-17 7:15 [PATCH 00/15] Fix issue with KOBJ_ADD uevent versus disk attributes Fam Zheng
2016-08-17 7:15 ` [PATCH 01/15] disk: Drop add_disk in favor of device_add_disk Fam Zheng
2016-08-17 7:15 ` [PATCH 02/15] genhd: Return error from register_disk() Fam Zheng
2016-08-17 7:15 ` [PATCH 03/15] genhd: Return error from blk_register_region Fam Zheng
2016-08-17 7:15 ` [PATCH 04/15] block: Return error from blk_integrity_add Fam Zheng
2016-08-17 7:15 ` [PATCH 05/15] genhd: Return error from disk_{add,alloc}_events Fam Zheng
2016-08-17 7:15 ` [PATCH 06/15] genhd: Add return code to device_add_disk Fam Zheng
2016-08-17 8:49 ` Cornelia Huck
2016-08-17 8:48 ` Fam Zheng
2016-08-17 9:06 ` Cornelia Huck
2016-08-17 9:14 ` Fam Zheng
2016-08-18 1:09 ` Ed Cashin
2016-08-17 7:15 ` [PATCH 07/15] genhd: Add attribute group parameter " Fam Zheng
2016-08-17 7:15 ` [PATCH 08/15] nvme: Pass attribute group " Fam Zheng
2016-08-17 8:13 ` kbuild test robot
2016-08-17 7:15 ` [PATCH 09/15] virtio-blk: " Fam Zheng
2016-09-04 4:18 ` Michael S. Tsirkin
2016-08-17 7:15 ` [PATCH 10/15] mtd: " Fam Zheng
2016-08-17 7:15 ` [PATCH 11/15] zram: " Fam Zheng
2016-08-18 1:59 ` Sergey Senozhatsky [this message]
2016-08-18 2:06 ` Sergey Senozhatsky
2016-08-17 7:15 ` [PATCH 12/15] mtip: " Fam Zheng
2016-08-17 7:15 ` [PATCH 13/15] aoeblk: " Fam Zheng
2016-08-17 7:15 ` [PATCH 14/15] axonram: " Fam Zheng
2016-08-17 7:15 ` [PATCH 15/15] block: Add FIXME comment to handle device_add_disk error Fam Zheng
2016-08-18 2:36 ` Sergey Senozhatsky
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