Messages in this thread | | | Date | Thu, 24 Jun 2004 10:38:27 -0700 | From | William Lee Irwin III <> | Subject | Re: [discuss] Re: 32-bit dma allocations on 64-bit platforms |
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On Thu, Jun 24, 2004 at 07:32:36PM +0200, Andrea Arcangeli wrote: > I did quite a few times and it was successfully merged in 2.4. Now I'd > need to forward port to 2.6. > I recall I recommended Andrew to merge the lower_zone_reserve_ratio > at some point during 2.5 or early 2.6 but apparently he implemented this > other thing called sysctl_lower_zone_protection. Note that now that I > look more into it, it seems sysctl_lower_zone_protection and > lower_zone_reserve_ratio have very little in common, I'm glad > sysctl_lower_zone_protection is disabled. sysctl_lower_zone_protection > is just an improvement to the algorithm I dropped from 2.4 when > lowmem_zone_reserve_ratio was merged. So in short enabling > sysctl_lower_zone_protection won't help, sysctl_lower_zone_protection > should be dropped enterely and replaced with lower_zone_reserve_ratio.
Could you refer me to an online source (e.g. Message-Id or URL) where the deficiencies in the incremental min and/or lower_zone_protection that the zone-to-zone watermarks address are described in detail?
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