From: David Howells <dhowells@redhat.com>
To: Matthew Wilcox <willy@infradead.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: David Howells <dhowells@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
Jens Axboe <axboe@kernel.dk>, Jeff Layton <jlayton@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Chuck Lever III <chuck.lever@oracle.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Herbert Xu <herbert@gondor.apana.org.au>,
linux-crypto@vger.kernel.org
Subject: [RFC PATCH v2 23/48] crypto: af_alg: Indent the loop in af_alg_sendmsg()
Date: Wed, 29 Mar 2023 15:13:29 +0100 [thread overview]
Message-ID: <20230329141354.516864-24-dhowells@redhat.com> (raw)
In-Reply-To: <20230329141354.516864-1-dhowells@redhat.com>
Put the loop in af_alg_sendmsg() into an if-statement to indent it to make
the next patch easier to review as that will add another branch to handle
MSG_SPLICE_PAGES to the if-statement.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
---
crypto/af_alg.c | 50 +++++++++++++++++++++++++------------------------
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 1dafd088ad45..483821e310e9 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -1031,35 +1031,37 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size,
if (sgl->cur)
sg_unmark_end(sg + sgl->cur - 1);
- do {
- struct page *pg;
- unsigned int i = sgl->cur;
+ if (1 /* TODO check MSG_SPLICE_PAGES */) {
+ do {
+ struct page *pg;
+ unsigned int i = sgl->cur;
- plen = min_t(size_t, len, PAGE_SIZE);
+ plen = min_t(size_t, len, PAGE_SIZE);
- pg = alloc_page(GFP_KERNEL);
- if (!pg) {
- err = -ENOMEM;
- goto unlock;
- }
+ pg = alloc_page(GFP_KERNEL);
+ if (!pg) {
+ err = -ENOMEM;
+ goto unlock;
+ }
- sg_assign_page(sg + i, pg);
+ sg_assign_page(sg + i, pg);
- err = memcpy_from_msg(page_address(sg_page(sg + i)),
- msg, plen);
- if (err) {
- __free_page(sg_page(sg + i));
- sg_assign_page(sg + i, NULL);
- goto unlock;
- }
+ err = memcpy_from_msg(page_address(sg_page(sg + i)),
+ msg, plen);
+ if (err) {
+ __free_page(sg_page(sg + i));
+ sg_assign_page(sg + i, NULL);
+ goto unlock;
+ }
- sg[i].length = plen;
- len -= plen;
- ctx->used += plen;
- copied += plen;
- size -= plen;
- sgl->cur++;
- } while (len && sgl->cur < MAX_SGL_ENTS);
+ sg[i].length = plen;
+ len -= plen;
+ ctx->used += plen;
+ copied += plen;
+ size -= plen;
+ sgl->cur++;
+ } while (len && sgl->cur < MAX_SGL_ENTS);
+ }
if (!size)
sg_mark_end(sg + sgl->cur - 1);
next prev parent reply other threads:[~2023-03-29 14:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230329141354.516864-1-dhowells@redhat.com>
2023-03-29 14:13 ` [RFC PATCH v2 21/48] crypto: af_alg: Pin pages rather than ref'ing if appropriate David Howells
2023-03-29 14:13 ` [RFC PATCH v2 22/48] crypto: af_alg: Use netfs_extract_iter_to_sg() to create scatterlists David Howells
2023-03-29 14:13 ` David Howells [this message]
2023-03-29 14:13 ` [RFC PATCH v2 24/48] crypto: af_alg: Support MSG_SPLICE_PAGES David Howells
2023-03-29 14:13 ` [RFC PATCH v2 25/48] crypto: af_alg: Convert af_alg_sendpage() to use MSG_SPLICE_PAGES David Howells
2023-03-29 14:13 ` [RFC PATCH v2 26/48] crypto: af_alg/hash: Support MSG_SPLICE_PAGES David Howells
2023-03-29 14:13 ` [RFC PATCH v2 36/48] algif: Remove hash_sendpage*() David Howells
2023-03-29 14:13 ` [RFC PATCH v2 48/48] sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) David Howells
2023-03-29 14:23 ` Hannes Reinecke
2023-03-29 14:39 ` David Howells
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