This is a followup to 'crypto: scompress - eliminate percpu scratch buffers', which attempted to replace the scompress per-CPU buffer entirely, but as Herbert pointed out, this is not going to fly in the targeted use cases. Instead, move the alloc/free of the buffers into the tfm init/exit hooks, so that we only have the per-CPU buffers allocated if their are any acomp ciphers of the right kind (i.e, ones that encapsulate a synchronous implementation) in use (#3) Patches #1 and #2 are fixes for issues I spotted when working on this code. Ard Biesheuvel (3): crypto: scompress - don't sleep with preemption disabled crypto: scompress - free partially allocated scratch buffers on failure crypto: scompress - defer allocation of scratch buffer to first use crypto/scompress.c | 55 ++++++++------------ 1 file changed, 22 insertions(+), 33 deletions(-) -- 2.11.0