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c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1661356437; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Bs5jtf8pa/Ff/33BlF30qaTAX7jt1lbbv+Q/r7d6Fts=; b=NdTBQt4IofMRtmm+lnzU4Vk2UflVS0S8bT5u+27ut1QK+BA7oRrRxxTZhcH1oP4bjfBck/ tyo5eNPKlBUBcGBw== From: Sebastian Andrzej Siewior To: Vlastimil Babka Cc: Rongwei Wang , Christoph Lameter , Joonsoo Kim , David Rientjes , Pekka Enberg , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Roman Gushchin , linux-mm@kvack.org, Thomas Gleixner , Mike Galbraith Subject: Re: [PATCH v2 4/5] mm/slub: convert object_map_lock to non-raw spinlock Message-ID: References: <20220823170400.26546-1-vbabka@suse.cz> <20220823170400.26546-5-vbabka@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220823170400.26546-5-vbabka@suse.cz> ARC-Authentication-Results: i=1; imf16.hostedemail.com; 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dkim=pass header.d=linutronix.de header.s=2020 header.b=sC0fugIz; dkim=pass header.d=linutronix.de header.s=2020e header.b=NdTBQt4I; spf=pass (imf16.hostedemail.com: domain of bigeasy@linutronix.de designates 193.142.43.55 as permitted sender) smtp.mailfrom=bigeasy@linutronix.de; dmarc=pass (policy=none) header.from=linutronix.de X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 806D7180012 X-Stat-Signature: isenfhe5dzfdgnxbqqe7po997zfx5zeu X-HE-Tag: 1661356439-540006 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2022-08-23 19:03:59 [+0200], Vlastimil Babka wrote: > The only remaining user of object_map_lock is list_slab_objects(). > Obtaining the lock there used to happen under slab_lock() which implied > disabling irqs on PREEMPT_RT, thus it's a raw_spinlock. With the > slab_lock() removed, we can convert it to a normal spinlock. > > Also remove the get_map()/put_map() wrappers as list_slab_objects() > became their only remaining user. > > Signed-off-by: Vlastimil Babka > Acked-by: David Rientjes > Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Reviewed-by: Sebastian Andrzej Siewior Sebastian