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a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1685019422; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc; bh=GsNqpSTU6UOTBF3q+ChF9zkp6ad7Y5esjJ5jVCFajeA=; b=uM7TynIWPzoxrcleU5GK2m19M4iBJAB07fQI3pNzuZhUowJrGaBuvaiM3Z/omPYwKa1Z1j 5pC9xTQxrF/aaADQ== From: Thomas Gleixner To: linux-mm@kvack.org Cc: Andrew Morton , Christoph Hellwig , Uladzislau Rezki , Lorenzo Stoakes , Peter Zijlstra , Baoquan He Subject: [V2 patch 0/6] mm/vmalloc: Assorted fixes and improvements Date: Thu, 25 May 2023 14:57:02 +0200 (CEST) X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: D3A46180007 X-Stat-Signature: cjnewz6du4w19w341ufxzdgkq51ndic6 X-HE-Tag: 1685019426-799509 X-HE-Meta: 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 pAljkHBV AYUjxjyJxSfEMuhBTKbfrtrEZnT/bbKvpiYn7Od09ZUD+ZHb3KJkd5rPOwZpsssaRVIZFLg8Q1pcw3As2BuxyfEKhv7sRbXJp1qdMNiQDHeSE6UrusJJSTbv3ht1D2Tuc75fj 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: This an update of version 1 which can be found here: https://lore.kernel.org/mm/20230523135902.517032811@linutronix.de Following up to the discussion about excessive TLB flushes https://lore.kernel.org/all/87a5y5a6kj.ffs@tglx this series addresses the following issues: 1) Prevent the stale TLB problem related to fully utilized vmap blocks 2) Avoid the double per CPU list walk in _vm_unmap_aliases() 3) Avoid flushing dirty space over and over 4) Add a lockless quickcheck in vb_alloc() and add missing READ/WRITE_ONCE() annotations 5) Prevent overeager purging of usable vmap_blocks if not under memory/address space pressure. Changes vs. version 1: - Coding style issues - Remove unneccesary force_purge arguments - Amend changelog of 1/6 - Pick up Reviewed-by tags where applicable Thanks, tglx