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Date: Thu, 19 May 2011 11:18:14 -0700 From: Greg KH <gregkh@...e.de> To: Tejun Heo <tj@...nel.org> Cc: linux-kernel@...r.kernel.org, stable@...nel.org, stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Jens Axboe <jaxboe@...ionio.com> Subject: Re: [57/71] block: rescan partitions on invalidated devices on -ENOMEDIA too On Thu, May 19, 2011 at 08:12:44PM +0200, Tejun Heo wrote: > Hello, Greg. > > On Thu, May 19, 2011 at 8:05 PM, Greg KH <gregkh@...e.de> wrote: > > > > 2.6.38-stable review patch. If anyone has any objections, please let us know. > > > > ------------------ > > > > From: Tejun Heo <tj@...nel.org> > > > > commit 02e352287a40bd456eb78df705bf888bc3161d3f upstream. > > > > __blkdev_get() doesn't rescan partitions if disk->fops->open() fails, > > which leads to ghost partition devices lingering after medimum removal > > is known to both the kernel and userland. The behavior also creates a > > subtle inconsistency where O_NONBLOCK open, which doesn't fail even if > > there's no medium, clears the ghots partitions, which is exploited to > > work around the problem from userland. > > > > Fix it by updating __blkdev_get() to issue partition rescan after > > -ENOMEDIA too. > > > > This was reported in the following bz. > > > > https://bugzilla.kernel.org/show_bug.cgi?id=13029 > > > > Stable: 2.6.38 > > > > Can you please hold this for a while? It causes an extra warning > message to be printed during device detection. It isn't harmful but > still. I'll soon send a patch to resolve the issue and it would be > better for them to go together. Sure, I've dropped this one for now. Let me know when I should add it back to the next round of stable releases. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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