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

Thomas Gleixner
2023-05-23T14:04:30Z

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