[V2 patch 0/6] mm/vmalloc: Assorted fixes and improvements

[Thomas Gleixner <tglx@linutronix.de>]

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