On Fri, Sep 08, 2023 at 04:51:15PM -0700, Nhat Pham wrote: > Out of zswap's 3 allocators, zsmalloc is the clear superior in terms of > memory utilization, both in theory and as observed in practice, with its > high storage density and low internal fragmentation. zsmalloc is also > more actively developed and maintained, since it is the allocator of > choice for zswap for many users, as well as the only allocator for zram. > > A historical objection to the selection of zsmalloc as the default > allocator for zswap is its lack of writeback capability. However, this > has changed, with the zsmalloc writeback patchset, and the subsequent > zswap LRU refactor. With this, there is not a lot of good reasons to > keep zbud, an otherwise inferior allocator, as the default instead of > zswap. > > This patch changes the default allocator to zsmalloc. The only exception > is on settings without MMU, in which case zbud will remain as the > default. > > Signed-off-by: Nhat Pham <nphamcs@xxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
