Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions

Christoph Lameter wrote:

On Mon, 8 May 2006, Martin J. Bligh wrote:

Can't you use sparsemem instead? It solves the same problem without the
magic faulting, doesn't it?

But sparsemem has more complex table lookups. Ultimately IA64 will move to sparsemem (I think) but we are not there yet and we would like to be sure that there are no performance regressions with that move.

Please explain your concerns in more detail re complexity. I was under
the impression the design avoided that nicely by folding the
calculations together down into a single layer.

It's been around for a long time now ... has nobody tested the
performance on ia64 yet?

M.
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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: "Martin J. Bligh" <[email protected]>
  • Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
    • From: Christoph Lameter <[email protected]>

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