search for: mandatary

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2018 Jul 11
1
[PATCH v35 1/5] mm: support to get hints of free page blocks
...rom the reserved memory left on the free list. Without that reserved memory, other allocation may cause the system free memory below the WMARK[MIN], and kswapd would start to do swapping. This is actually just a small optimization to reduce the probability of causing swapping (nice to have, but not mandatary because we will allocate free page blocks one by one). > But let me note that I am not really convinced how this (or previous) > approach will really work in most workloads. We tend to cache heavily so > there is rarely any memory free. With less free memory, the improvement becomes les...
2018 Jul 11
3
[PATCH v35 1/5] mm: support to get hints of free page blocks
On 07/11/2018 05:21 PM, Michal Hocko wrote: > On Tue 10-07-18 18:44:34, Linus Torvalds wrote: > [...] >> That was what I tried to encourage with actually removing the pages >> form the page list. That would be an _incremental_ interface. You can >> remove MAX_ORDER-1 pages one by one (or a hundred at a time), and mark >> them free for ballooning that way. And if you
2018 Jul 11
3
[PATCH v35 1/5] mm: support to get hints of free page blocks
On 07/11/2018 05:21 PM, Michal Hocko wrote: > On Tue 10-07-18 18:44:34, Linus Torvalds wrote: > [...] >> That was what I tried to encourage with actually removing the pages >> form the page list. That would be an _incremental_ interface. You can >> remove MAX_ORDER-1 pages one by one (or a hundred at a time), and mark >> them free for ballooning that way. And if you
2023 Feb 20
2
[PATCH vhost 01/10] virtio_ring: split: refactor virtqueue_add_split() for premapped
On Tue, Feb 14, 2023 at 3:27 PM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote: > > DMA-related logic is separated from the virtqueue_add_split to prepare > for subsequent support for premapped. The patch seems to do more than what is described here. To simplify reviewers, I'd suggest to split this patch into three: 1) virtqueue_add_split_prepare() (could we have a better