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From: Thomas Gleixner <tglx@linutronix.de>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Christoph Hellwig <hch@lst.de>,
	Uladzislau Rezki <urezki@gmail.com>,
	Lorenzo Stoakes <lstoakes@gmail.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Baoquan He <bhe@redhat.com>
Subject: [patch 0/6] mm/vmalloc: Assorted fixes and improvements
Date: Tue, 23 May 2023 16:02:09 +0200 (CEST)	[thread overview]
Message-ID: <20230523135902.517032811@linutronix.de> (raw)

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.

Thanks,

	tglx


             reply	other threads:[~2023-05-23 14:04 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-23 14:02 Thomas Gleixner [this message]
2023-05-23 14:02 ` [patch 1/6] mm/vmalloc: Prevent stale TLBs in fully utilized blocks Thomas Gleixner
2023-05-23 15:17   ` Christoph Hellwig
2023-05-23 16:40     ` Thomas Gleixner
2023-05-23 16:47       ` Uladzislau Rezki
2023-05-23 19:18   ` Lorenzo Stoakes
2023-05-24  9:19     ` Uladzislau Rezki
2023-05-24  9:25   ` Baoquan He
2023-05-24  9:51     ` Thomas Gleixner
2023-05-24 11:24       ` Baoquan He
2023-05-24 11:26         ` Baoquan He
2023-05-24 11:36         ` Uladzislau Rezki
2023-05-24 12:49           ` Thomas Gleixner
2023-05-24 12:44         ` Thomas Gleixner
2023-05-24 13:41           ` Baoquan He
2023-05-24 14:31             ` Thomas Gleixner
2023-05-24  9:32   ` Baoquan He
2023-05-24  9:52     ` Thomas Gleixner
2023-05-24 14:10       ` Baoquan He
2023-05-24 14:35         ` Thomas Gleixner
2023-05-23 14:02 ` [patch 2/6] mm/vmalloc: Avoid iterating over per CPU vmap blocks twice Thomas Gleixner
2023-05-23 15:21   ` Christoph Hellwig
2023-05-23 14:02 ` [patch 3/6] mm/vmalloc: Prevent flushing dirty space over and over Thomas Gleixner
2023-05-23 15:27   ` Christoph Hellwig
2023-05-23 16:10     ` Thomas Gleixner
2023-05-24  9:43   ` Baoquan He
2023-05-23 14:02 ` [patch 4/6] mm/vmalloc: Check free space in vmap_block lockless Thomas Gleixner
2023-05-23 15:29   ` Christoph Hellwig
2023-05-23 16:17     ` Thomas Gleixner
2023-05-24  9:20       ` Uladzislau Rezki
2023-05-23 14:02 ` [patch 5/6] mm/vmalloc: Add missing READ/WRITE_ONCE() annotations Thomas Gleixner
2023-05-24  9:15   ` Uladzislau Rezki
2023-05-23 14:02 ` [patch 6/6] mm/vmalloc: Dont purge usable blocks unnecessarily Thomas Gleixner
2023-05-23 15:30   ` Christoph Hellwig
2023-05-24 10:34   ` Baoquan He
2023-05-24 12:55     ` Thomas Gleixner
2023-05-23 16:24 ` [patch 0/6] mm/vmalloc: Assorted fixes and improvements Uladzislau Rezki
2023-05-23 17:33   ` Thomas Gleixner
2023-05-23 17:39     ` Thomas Gleixner
2023-05-23 17:48       ` Uladzislau Rezki
2023-05-23 17:51         ` Uladzislau Rezki
2023-05-23 17:55         ` Uladzislau Rezki
2023-05-23 18:40           ` Thomas Gleixner

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