linux-kernel - Re: data corruption: revalidating a (removable) hdd/flash on re-insert

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Message-ID: <ac3eb2510811041629x152712ddwa43a048169b1e233@mail.gmail.com>
Date:	Wed, 5 Nov 2008 01:29:54 +0100
From:	"Kay Sievers" <kay.sievers@...y.org>
To:	"Michael Tokarev" <mjt@....msk.ru>
Cc:	"Pavel Machek" <pavel@...e.cz>,
	"Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: data corruption: revalidating a (removable) hdd/flash on re-insert

On Tue, Nov 4, 2008 at 22:22, Michael Tokarev <mjt@....msk.ru> wrote:

> So for me, it's easy to deal with (not perfect but it works; it'd be
> even better if i will be able to wait for umount using inotify, to
> only wake when really needed),

If I understand it right, what you are looking for, you could sleep in
poll() of /proc/mounts, and will be woken up with POLLERR if anything
in your mount tree changes. Then you check the state of your usb
device and possibly invalidate it.

Kay
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