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Date: Sun, 12 Jul 2026 10:01:37 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Suren Baghdasaryan <surenb@google.com>,
	"Liam R. Howlett" <liam@infradead.org>,
	Vlastimil Babka <vbabka@kernel.org>,
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Subject: Re: [PATCH 1/2] mm/vmalloc: acquire init_mm read lock on huge vmap
 promotion
Message-ID: <2026071252-sweep-quirk-a068@gregkh>
References: <20260710-series-vmap-race-fix-v1-0-5b3794c113fe@kernel.org>
 <20260710-series-vmap-race-fix-v1-1-5b3794c113fe@kernel.org>
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On Sun, Jul 12, 2026 at 01:13:12PM +0530, Dev Jain wrote:
> 
> 
> [-----]
> 
> > We also define a guard class for mmap_read_trylock() so we can use
> > cleanup.h to make the scope handling cleaner in the implementation.
> > 
> 
> Will this cause backport problems, I think this scoped guard thingy is
> not that old?

Don't worry about stable issues until after the fact.  Fix things
properly in Linus's tree first.

And scoped guard has been backported to many of the LTS branches
already.

thanks,

greg k-h