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v3 2026-10-14

zswap 分离读写请求降低竞争 · v3

v3 zswap 分离压缩/解压请求，强制 MAX_SYNC_COMP_REQSIZE，栈请求同步解压。

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子 Patch（3）

1/3
mm: zswap: use separate compression and decompression requests
[Re: [PATCH v3 1/3] mm: zswap: use separate compression and decompression requests] On Tue, Oct 13, 2026 at 8:10 AM Usama Arif usama.arif@linux.dev wrote: > > Stores and loads serialize on the same
2/3
crypto: acomp - enforce MAX_SYNC_COMP_REQSIZE
在 acomp tfm 初始化时检查请求大小不超过 MAX_SYNC_COMP_REQSIZE，拒绝超限同步压缩请求；现有算法均满足该限制，防止同步路径越界。
3/3
mm: zswap: use stack requests for synchronous decompression
On Tue, Oct 13, 2026 at 8:11 AM Usama Arif usama.arif@linux.dev wrote: > > With separate requests for compression and decompression, loads still > serialize on the per-CPU decompression mutex. A low
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