On Mon, Jan 2, 2023 at 8:57 PM Thomas Weißschuh <thomas@xxxxxxxx> wrote: > > Hi, > > On Mon, Nov 28, 2022 at 11:16:09AM -0800, Nhat Pham wrote: > > Unlike other zswap's allocators such as zbud or z3fold, zsmalloc > > currently lacks the writeback mechanism. This means that when the zswap > > pool is full, it will simply reject further allocations, and the pages > > will be written directly to swap. > > > > This series of patches implements writeback for zsmalloc. When the zswap > > pool becomes full, zsmalloc will attempt to evict all the compressed > > objects in the least-recently used zspages. > > Then this part of Documentation/admin-guide/mm/zswap.rst should probably > also be updated at some point: > > However, zsmalloc does not implement compressed page eviction, so > once zswap fills it cannot evict the oldest page, it can only reject > new pages. > > Thomas Thanks for pointing this out, Thomas! I'll send a patch to update this.
