crypto: scompress - don't sleep with preemption disabled

Due to the use of per-CPU buffers, scomp_acomp_comp_decomp() executes with preemption disabled, and so whether the CRYPTO_TFM_REQ_MAY_SLEEP flag is set is irrelevant, since we cannot sleep anyway. So disregard the flag, and use GFP_ATOMIC unconditionally. Cc: <[email protected]> # v4.10+ Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
ambv · Aug 3, 2017 · 3c08377 · 3c08377
1 parent 9166c44
commit 3c08377
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/crypto/scompress.c b/crypto/scompress.c
@@ -211,9 +211,7 @@ static int scomp_acomp_comp_decomp(struct acomp_req *req, int dir)
 					      scratch_dst, &req->dlen, *ctx);
 	if (!ret) {
 		if (!req->dst) {
-			req->dst = crypto_scomp_sg_alloc(req->dlen,
-				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
-				   GFP_KERNEL : GFP_ATOMIC);
+			req->dst = crypto_scomp_sg_alloc(req->dlen, GFP_ATOMIC);
 			if (!req->dst)
 				goto out;
 		}