Hi Andrew, On Thu, Feb 22, 2024 at 4:11 PM Barry Song <21cnbao@xxxxxxxxx> wrote: > > From: Barry Song <v-songbaohua@xxxxxxxx> > > In zswap, if we use zsmalloc, we cannot sleep while we map the > compressed memory, so we copy it to a temporary buffer. By > knowing the alg won't sleep can help zswap to avoid the > memcpy. > Thus we introduce an API in crypto to expose if acomp is async, > and zswap can use it to decide if it can remove copying to the > tmp buffer. > > -v6: > * add acked-by of Herbert, Thanks! > * remove patch 3/3 from the series, as that one will go > through crypto Can you please pull this into mm-tree? This used to have 3 patches. 3/3 was separated according to Herbert's requirements and has been in a crypto tree. crypto: scomp - remove memcpy if sg_nents is 1 and pages are lowmem https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=77292bb8ca Two drivers fixes(patch 1 needs) have also been in crypto tree: crypto: hisilicon/zip - fix the missing CRYPTO_ALG_ASYNC in cra_flags https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=db8ac88385 crypto: iaa - fix the missing CRYPTO_ALG_ASYNC in cra_flags https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=30dd94dba35 So it should be quite safe to pull this series into mm-tree now. > > Barry Song (2): > crypto: introduce: acomp_is_async to expose if comp drivers might > sleep > mm/zswap: remove the memcpy if acomp is not sleepable > > include/crypto/acompress.h | 6 ++++++ > mm/zswap.c | 6 ++++-- > 2 files changed, 10 insertions(+), 2 deletions(-) > > -- > 2.34.1 Thanks Barry
