From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 7 Apr 2025 10:05:27 +0000 (+0800)
Subject: crypto: acomp - Simplify folio handling
X-Git-Tag: block-6.16-20250606~34^2~298
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=5f3437e9c89eec7bbf0ee5f582894d41f57528bc;p=linux-block.git

crypto: acomp - Simplify folio handling

Rather than storing the folio as is and handling it later, convert
it to a scatterlist right away.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/acompress.c b/crypto/acompress.c
index 530b9bfd03a5..674325ecefbc 100644
--- a/crypto/acompress.c
+++ b/crypto/acompress.c
@@ -33,9 +33,7 @@ struct crypto_scomp;
 enum {
 	ACOMP_WALK_SLEEP = 1 << 0,
 	ACOMP_WALK_SRC_LINEAR = 1 << 1,
-	ACOMP_WALK_SRC_FOLIO = 1 << 2,
-	ACOMP_WALK_DST_LINEAR = 1 << 3,
-	ACOMP_WALK_DST_FOLIO = 1 << 4,
+	ACOMP_WALK_DST_LINEAR = 1 << 2,
 };
 
 static const struct crypto_type crypto_acomp_type;
@@ -195,12 +193,8 @@ static void acomp_reqchain_virt(struct acomp_req *req)
 
 	if (state->flags & CRYPTO_ACOMP_REQ_SRC_VIRT)
 		acomp_request_set_src_dma(req, state->src, slen);
-	else if (state->flags & CRYPTO_ACOMP_REQ_SRC_FOLIO)
-		acomp_request_set_src_folio(req, state->sfolio, req->soff, slen);
 	if (state->flags & CRYPTO_ACOMP_REQ_DST_VIRT)
 		acomp_request_set_dst_dma(req, state->dst, dlen);
-	else if (state->flags & CRYPTO_ACOMP_REQ_DST_FOLIO)
-		acomp_request_set_dst_folio(req, state->dfolio, req->doff, dlen);
 }
 
 static void acomp_virt_to_sg(struct acomp_req *req)
@@ -208,9 +202,7 @@ static void acomp_virt_to_sg(struct acomp_req *req)
 	struct acomp_req_chain *state = &req->chain;
 
 	state->flags = req->base.flags & (CRYPTO_ACOMP_REQ_SRC_VIRT |
-					  CRYPTO_ACOMP_REQ_DST_VIRT |
-					  CRYPTO_ACOMP_REQ_SRC_FOLIO |
-					  CRYPTO_ACOMP_REQ_DST_FOLIO);
+					  CRYPTO_ACOMP_REQ_DST_VIRT);
 
 	if (acomp_request_src_isvirt(req)) {
 		unsigned int slen = req->slen;
@@ -219,16 +211,6 @@ static void acomp_virt_to_sg(struct acomp_req *req)
 		state->src = svirt;
 		sg_init_one(&state->ssg, svirt, slen);
 		acomp_request_set_src_sg(req, &state->ssg, slen);
-	} else if (acomp_request_src_isfolio(req)) {
-		struct folio *folio = req->sfolio;
-		unsigned int slen = req->slen;
-		size_t off = req->soff;
-
-		state->sfolio = folio;
-		sg_init_table(&state->ssg, 1);
-		sg_set_page(&state->ssg, folio_page(folio, off / PAGE_SIZE),
-			    slen, off % PAGE_SIZE);
-		acomp_request_set_src_sg(req, &state->ssg, slen);
 	}
 
 	if (acomp_request_dst_isvirt(req)) {
@@ -238,16 +220,6 @@ static void acomp_virt_to_sg(struct acomp_req *req)
 		state->dst = dvirt;
 		sg_init_one(&state->dsg, dvirt, dlen);
 		acomp_request_set_dst_sg(req, &state->dsg, dlen);
-	} else if (acomp_request_dst_isfolio(req)) {
-		struct folio *folio = req->dfolio;
-		unsigned int dlen = req->dlen;
-		size_t off = req->doff;
-
-		state->dfolio = folio;
-		sg_init_table(&state->dsg, 1);
-		sg_set_page(&state->dsg, folio_page(folio, off / PAGE_SIZE),
-			    dlen, off % PAGE_SIZE);
-		acomp_request_set_src_sg(req, &state->dsg, dlen);
 	}
 }
 
@@ -579,18 +551,8 @@ int acomp_walk_virt(struct acomp_walk *__restrict walk,
 		walk->flags |= ACOMP_WALK_SLEEP;
 	if ((req->base.flags & CRYPTO_ACOMP_REQ_SRC_VIRT))
 		walk->flags |= ACOMP_WALK_SRC_LINEAR;
-	else if ((req->base.flags & CRYPTO_ACOMP_REQ_SRC_FOLIO)) {
-		src = &req->chain.ssg;
-		sg_init_table(src, 1);
-		sg_set_folio(src, req->sfolio, walk->slen, req->soff);
-	}
 	if ((req->base.flags & CRYPTO_ACOMP_REQ_DST_VIRT))
 		walk->flags |= ACOMP_WALK_DST_LINEAR;
-	else if ((req->base.flags & CRYPTO_ACOMP_REQ_DST_FOLIO)) {
-		dst = &req->chain.dsg;
-		sg_init_table(dst, 1);
-		sg_set_folio(dst, req->dfolio, walk->dlen, req->doff);
-	}
 
 	if ((walk->flags & ACOMP_WALK_SRC_LINEAR)) {
 		walk->in.sg = (void *)req->svirt;
diff --git a/crypto/scompress.c b/crypto/scompress.c
index 7ade3f2fee7e..c330b81bc5a6 100644
--- a/crypto/scompress.c
+++ b/crypto/scompress.c
@@ -193,10 +193,7 @@ static int scomp_acomp_comp_decomp(struct acomp_req *req, int dir)
 	if (dst_isvirt)
 		dst = req->dvirt;
 	else {
-		if (acomp_request_dst_isfolio(req)) {
-			dpage = folio_page(req->dfolio, 0);
-			doff = req->doff;
-		} else if (dlen <= req->dst->length) {
+		if (dlen <= req->dst->length) {
 			dpage = sg_page(req->dst);
 			doff = req->dst->offset;
 		} else
@@ -218,10 +215,7 @@ static int scomp_acomp_comp_decomp(struct acomp_req *req, int dir)
 	else {
 		src = NULL;
 		do {
-			if (acomp_request_src_isfolio(req)) {
-				spage = folio_page(req->sfolio, 0);
-				soff = req->soff;
-			} else if (slen <= req->src->length) {
+			if (slen <= req->src->length) {
 				spage = sg_page(req->src);
 				soff = req->src->offset;
 			} else
diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
index 96ec0090a855..1b30290d6380 100644
--- a/include/crypto/acompress.h
+++ b/include/crypto/acompress.h
@@ -32,17 +32,10 @@
 /* Set this bit for if virtual address destination cannot be used for DMA. */
 #define CRYPTO_ACOMP_REQ_DST_NONDMA	0x00000010
 
-/* Set this bit if source is a folio. */
-#define CRYPTO_ACOMP_REQ_SRC_FOLIO	0x00000020
-
-/* Set this bit if destination is a folio. */
-#define CRYPTO_ACOMP_REQ_DST_FOLIO	0x00000040
-
 /* Private flags that should not be touched by the user. */
 #define CRYPTO_ACOMP_REQ_PRIVATE \
 	(CRYPTO_ACOMP_REQ_SRC_VIRT | CRYPTO_ACOMP_REQ_SRC_NONDMA | \
-	 CRYPTO_ACOMP_REQ_DST_VIRT | CRYPTO_ACOMP_REQ_DST_NONDMA | \
-	 CRYPTO_ACOMP_REQ_SRC_FOLIO | CRYPTO_ACOMP_REQ_DST_FOLIO)
+	 CRYPTO_ACOMP_REQ_DST_VIRT | CRYPTO_ACOMP_REQ_DST_NONDMA)
 
 #define CRYPTO_ACOMP_DST_MAX		131072
 
@@ -84,10 +77,6 @@ struct acomp_req_chain {
  * @dst:	Destination scatterlist
  * @svirt:	Source virtual address
  * @dvirt:	Destination virtual address
- * @sfolio:	Source folio
- * @soff:	Source folio offset
- * @dfolio:	Destination folio
- * @doff:	Destination folio offset
  * @slen:	Size of the input buffer
  * @dlen:	Size of the output buffer and number of bytes produced
  * @chain:	Private API code data, do not use
@@ -98,15 +87,11 @@ struct acomp_req {
 	union {
 		struct scatterlist *src;
 		const u8 *svirt;
-		struct folio *sfolio;
 	};
 	union {
 		struct scatterlist *dst;
 		u8 *dvirt;
-		struct folio *dfolio;
 	};
-	size_t soff;
-	size_t doff;
 	unsigned int slen;
 	unsigned int dlen;
 
@@ -373,8 +358,6 @@ static inline void acomp_request_set_params(struct acomp_req *req,
 
 	req->base.flags &= ~(CRYPTO_ACOMP_REQ_SRC_VIRT |
 			     CRYPTO_ACOMP_REQ_SRC_NONDMA |
-			     CRYPTO_ACOMP_REQ_SRC_FOLIO |
-			     CRYPTO_ACOMP_REQ_DST_FOLIO |
 			     CRYPTO_ACOMP_REQ_DST_VIRT |
 			     CRYPTO_ACOMP_REQ_DST_NONDMA);
 }
@@ -397,7 +380,6 @@ static inline void acomp_request_set_src_sg(struct acomp_req *req,
 
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_NONDMA;
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_VIRT;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_FOLIO;
 }
 
 /**
@@ -417,7 +399,6 @@ static inline void acomp_request_set_src_dma(struct acomp_req *req,
 	req->slen = slen;
 
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_NONDMA;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_FOLIO;
 	req->base.flags |= CRYPTO_ACOMP_REQ_SRC_VIRT;
 }
 
@@ -438,7 +419,6 @@ static inline void acomp_request_set_src_nondma(struct acomp_req *req,
 	req->svirt = src;
 	req->slen = slen;
 
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_FOLIO;
 	req->base.flags |= CRYPTO_ACOMP_REQ_SRC_NONDMA;
 	req->base.flags |= CRYPTO_ACOMP_REQ_SRC_VIRT;
 }
@@ -457,13 +437,9 @@ static inline void acomp_request_set_src_folio(struct acomp_req *req,
 					       struct folio *folio, size_t off,
 					       unsigned int len)
 {
-	req->sfolio = folio;
-	req->soff = off;
-	req->slen = len;
-
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_NONDMA;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_SRC_VIRT;
-	req->base.flags |= CRYPTO_ACOMP_REQ_SRC_FOLIO;
+	sg_init_table(&req->chain.ssg, 1);
+	sg_set_folio(&req->chain.ssg, folio, len, off);
+	acomp_request_set_src_sg(req, &req->chain.ssg, len);
 }
 
 /**
@@ -484,7 +460,6 @@ static inline void acomp_request_set_dst_sg(struct acomp_req *req,
 
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_NONDMA;
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_VIRT;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_FOLIO;
 }
 
 /**
@@ -504,7 +479,6 @@ static inline void acomp_request_set_dst_dma(struct acomp_req *req,
 	req->dlen = dlen;
 
 	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_NONDMA;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_FOLIO;
 	req->base.flags |= CRYPTO_ACOMP_REQ_DST_VIRT;
 }
 
@@ -524,7 +498,6 @@ static inline void acomp_request_set_dst_nondma(struct acomp_req *req,
 	req->dvirt = dst;
 	req->dlen = dlen;
 
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_FOLIO;
 	req->base.flags |= CRYPTO_ACOMP_REQ_DST_NONDMA;
 	req->base.flags |= CRYPTO_ACOMP_REQ_DST_VIRT;
 }
@@ -543,13 +516,9 @@ static inline void acomp_request_set_dst_folio(struct acomp_req *req,
 					       struct folio *folio, size_t off,
 					       unsigned int len)
 {
-	req->dfolio = folio;
-	req->doff = off;
-	req->dlen = len;
-
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_NONDMA;
-	req->base.flags &= ~CRYPTO_ACOMP_REQ_DST_VIRT;
-	req->base.flags |= CRYPTO_ACOMP_REQ_DST_FOLIO;
+	sg_init_table(&req->chain.dsg, 1);
+	sg_set_folio(&req->chain.dsg, folio, len, off);
+	acomp_request_set_dst_sg(req, &req->chain.dsg, len);
 }
 
 /**
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index b51d66633935..d6d53c7696fd 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -154,9 +154,7 @@ void crypto_unregister_acomps(struct acomp_alg *algs, int count);
 static inline bool acomp_request_issg(struct acomp_req *req)
 {
 	return !(req->base.flags & (CRYPTO_ACOMP_REQ_SRC_VIRT |
-				    CRYPTO_ACOMP_REQ_DST_VIRT |
-				    CRYPTO_ACOMP_REQ_SRC_FOLIO |
-				    CRYPTO_ACOMP_REQ_DST_FOLIO));
+				    CRYPTO_ACOMP_REQ_DST_VIRT));
 }
 
 static inline bool acomp_request_src_isvirt(struct acomp_req *req)
@@ -191,16 +189,6 @@ static inline bool acomp_request_isnondma(struct acomp_req *req)
 				  CRYPTO_ACOMP_REQ_DST_NONDMA);
 }
 
-static inline bool acomp_request_src_isfolio(struct acomp_req *req)
-{
-	return req->base.flags & CRYPTO_ACOMP_REQ_SRC_FOLIO;
-}
-
-static inline bool acomp_request_dst_isfolio(struct acomp_req *req)
-{
-	return req->base.flags & CRYPTO_ACOMP_REQ_DST_FOLIO;
-}
-
 static inline bool crypto_acomp_req_chain(struct crypto_acomp *tfm)
 {
 	return crypto_tfm_req_chain(&tfm->base);
@@ -250,8 +238,6 @@ static inline struct acomp_req *acomp_fbreq_on_stack_init(
 	req->dst = old->dst;
 	req->slen = old->slen;
 	req->dlen = old->dlen;
-	req->soff = old->soff;
-	req->doff = old->doff;
 
 	return req;
 }