linux-kernel - Re: [PATCH] maple_tree: fix typos/spellos etc.

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Date:   Mon, 11 Dec 2023 10:18:48 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org,
        linux-mm@...ck.org
Subject: Re: [PATCH] maple_tree: fix typos/spellos etc.

* Randy Dunlap <rdunlap@...radead.org> [231210 18:54]:
> 
> 
> On 12/10/23 14:56, Andrew Morton wrote:
> > On Sun, 10 Dec 2023 21:13:15 +0000 Matthew Wilcox <willy@...radead.org> wrote:
> > 
> >> On Sat, Dec 09, 2023 at 10:38:39PM -0800, Randy Dunlap wrote:
> >>> - * mas_topiary_node() - Dispose of a singe node
> >>> + * mas_topiary_node() - Dispose of a single node
> >>
> >> That's all well and good, but how do we dispose of singed nodes now?
> > 
> > Lol, this is my all-time favorite typo!
> > 
> > 
> > hp2:/usr/src/mm> git log | grep Singed-off-by | wc -l
> > 59
> > 
> > (sounds painful)
> > 
> > hp2:/usr/src/linux-6.7-rc4> grep -ri singe .
> > 
> 
> Current linux-next shows:
> 
> $ git grep -iw  singe
> arch/x86/events/intel/pt.c:      * In case of singe-entry ToPA, always put the self-referencing END
> arch/x86/kvm/vmx/vmx.c:  * evmcs in singe VM shares same assist page.
> drivers/input/misc/yealink.c:           /* Combine up to <len> consecutive LCD bytes in a singe request
> drivers/net/ethernet/brocade/bna/bfa_defs_status.h: * NOTE: The error msgs are auto generated from the comments. Only singe line
> kernel/trace/trace_events_filter.c: * struct prog_entry - a singe entry in the filter program
> lib/maple_tree.c: * mas_topiary_node() - Dispose of a singe node
> lib/maple_tree.c:       /* New root needs a singe node */
> sound/core/seq/seq_queue.c:/* enqueue a event to singe queue */
> sound/pci/rme9652/hdspm.c:      /* Changing between Singe, Double and Quad speed is not
> 
> but there is also "unsinged", "assinged", & "singel" if the -w is omitted.
> 
> And somehow the two Chinese translations of submitting-patches.rst contain
> Singed-off-by.
> 

Nodes become singed, especially around the edges, when writes are too
fast.  We have to replace them with fresh nodes, otherwise tasks can't
find the VMAs in that area.

I will have to research how these other people were able to implement
'unsinged' - maybe there's a way to reuse these singed areas more
effectively.