From: "Singh, Balbir" <sblbir@amazon.com>
To: "martin.petersen@oracle.com" <martin.petersen@oracle.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"Sangaraju, Someswarudu" <ssomesh@amazon.com>,
"jejb@linux.ibm.com" <jejb@linux.ibm.com>,
"hch@lst.de" <hch@lst.de>, "axboe@kernel.dk" <axboe@kernel.dk>,
"mst@redhat.com" <mst@redhat.com>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"Chaitanya.Kulkarni@wdc.com" <Chaitanya.Kulkarni@wdc.com>
Subject: Re: [resend v1 1/5] block/genhd: Notify udev about capacity change
Date: Tue, 7 Jan 2020 22:30:30 +0000 [thread overview]
Message-ID: <d1635bae908b59fb4fd7de7c90ffbd5b73de7542.camel@amazon.com> (raw)
In-Reply-To: <yq1ftgs2b6g.fsf@oracle.com>
On Mon, 2020-01-06 at 22:32 -0500, Martin K. Petersen wrote:
> Hi Balbir,
>
> > Allow block/genhd to notify user space (via udev) about disk size
> > changes using a new helper disk_set_capacity(), which is a wrapper on
> > top of set_capacity(). disk_set_capacity() will only notify via udev
> > if the current capacity or the target capacity is not zero.
>
> I know set_capacity() is called all over the place making it a bit of a
> pain to audit. Is that the reason you introduced a new function instead
> of just emitting the event in set_capacity()?
>
I did this to avoid having to enforce that set_capacity() implied a
notification. Largely to control the impact of the change by default.
Balbir Singh.
next prev parent reply other threads:[~2020-01-07 22:30 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-02 7:53 [resend v1 0/5] Add support for block disk resize notification Balbir Singh
2020-01-02 7:53 ` [resend v1 1/5] block/genhd: Notify udev about capacity change Balbir Singh
2020-01-03 6:16 ` Chaitanya Kulkarni
2020-01-04 4:44 ` Singh, Balbir
2020-01-04 22:32 ` Chaitanya Kulkarni
2020-01-08 15:02 ` hch
2020-01-07 3:32 ` Martin K. Petersen
2020-01-07 22:30 ` Singh, Balbir [this message]
2020-01-08 3:15 ` Martin K. Petersen
2020-01-08 15:04 ` hch
2020-01-21 19:57 ` Singh, Balbir
2020-01-02 7:53 ` [resend v1 2/5] drivers/block/virtio_blk.c: Convert to use disk_set_capacity Balbir Singh
2020-01-02 7:53 ` [resend v1 3/5] drivers/block/xen-blkfront.c: " Balbir Singh
2020-01-02 7:53 ` [resend v1 4/5] drivers/nvme/host/core.c: " Balbir Singh
2020-01-04 22:27 ` Chaitanya Kulkarni
2020-01-06 0:46 ` Singh, Balbir
2020-01-08 15:04 ` hch
2020-01-09 3:33 ` Martin K. Petersen
2020-01-09 13:12 ` Ewan D. Milne
2020-01-21 19:52 ` Singh, Balbir
2020-01-02 7:53 ` [resend v1 5/5] drivers/scsi/sd.c: " Balbir Singh
2020-01-02 22:21 ` Chaitanya Kulkarni
2020-01-03 0:23 ` Singh, Balbir
2020-01-07 3:48 ` Martin K. Petersen
2020-01-07 3:57 ` James Bottomley
2020-01-07 4:39 ` Martin K. Petersen
2020-01-07 21:37 ` Ewan D. Milne
2020-01-08 2:59 ` Martin K. Petersen
2020-01-08 21:27 ` Ewan D. Milne
2020-01-07 22:28 ` Singh, Balbir
2020-01-08 3:15 ` Martin K. Petersen
2020-01-08 4:20 ` Singh, Balbir
2020-01-08 21:32 ` Ewan D. Milne
2020-01-08 15:06 ` Christoph Hellwig
2020-01-09 2:53 ` Martin K. Petersen
2020-01-06 5:59 ` [resend v1 0/5] Add support for block disk resize notification Bob Liu
2020-01-06 8:47 ` Singh, Balbir
2020-01-06 9:08 ` Bob Liu
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