Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions

• To: Manfred Spraul <[email protected]>
• Subject: Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
• From: Nick Piggin <[email protected]>
• Date: Tue, 09 May 2006 16:37:18 +1000
• Cc: Christoph Lameter <[email protected]>, Pekka Enberg <[email protected]>, Linus Torvalds <[email protected]>, Daniel Hokka Zakrisson <[email protected]>, [email protected], Björn Steinbrink <[email protected]>, [email protected], [email protected], [email protected]
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Manfred Spraul wrote:

Christoph Lameter wrote:

virt_to_page is not cheap on NUMA.

I know. But it was a design assumption when I wrote the slab allocator.

Acutally, it's not cheap on non-NUMA either. And the PageCompound() check adds an additional branch.

Just FYI, the PageCompound check can go as soon as nommu stops trying to do its

broken page refcounting on slab pages (whenever that happens :P).
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• References:
  • [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Daniel Hokka Zakrisson <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Linus Torvalds <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: "Pekka Enberg" <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: "Pekka Enberg" <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Linus Torvalds <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Pekka Enberg <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Linus Torvalds <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Pekka Enberg <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Manfred Spraul <[email protected]>

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