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Date: Fri, 14 Aug 2020 01:30:39 -0700 From: Michel Lespinasse <walken@...gle.com> To: Chinwen Chang <chinwen.chang@...iatek.com> Cc: Matthias Brugger <matthias.bgg@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Vlastimil Babka <vbabka@...e.cz>, Daniel Jordan <daniel.m.jordan@...cle.com>, Davidlohr Bueso <dbueso@...e.de>, Alexey Dobriyan <adobriyan@...il.com>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, Jason Gunthorpe <jgg@...pe.ca>, Steven Price <steven.price@....com>, Song Liu <songliubraving@...com>, Jimmy Assarsson <jimmyassarsson@...il.com>, Huang Ying <ying.huang@...el.com>, LKML <linux-kernel@...r.kernel.org>, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-fsdevel@...r.kernel.org, wsd_upstream@...iatek.com Subject: Re: [PATCH v2 1/2] mmap locking API: add mmap_lock_is_contended() On Wed, Aug 12, 2020 at 7:14 PM Chinwen Chang <chinwen.chang@...iatek.com> wrote: > > Add new API to query if someone wants to acquire mmap_lock > for write attempts. > > Using this instead of rwsem_is_contended makes it more tolerant > of future changes to the lock type. > > Signed-off-by: Chinwen Chang <chinwen.chang@...iatek.com> Acked-by: Michel Lespinasse <walken@...gle.com>
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