linux-kernel - Re: [resend v1 1/5] block/genhd: Notify udev about capacity change

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Date:   Mon, 06 Jan 2020 22:32:55 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Balbir Singh <sblbir@...zon.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-block@...r.kernel.org>,
        <linux-nvme@...ts.infradead.org>, <axboe@...nel.dk>,
        <ssomesh@...zon.com>, <jejb@...ux.ibm.com>, <hch@....de>,
        <mst@...hat.com>, <Chaitanya.Kulkarni@....com>
Subject: Re: [resend v1 1/5] block/genhd: Notify udev about capacity change


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()?

-- 
Martin K. Petersen	Oracle Linux Engineering