diff options
| author | David Howells <dhowells@redhat.com> | 2023-06-06 14:08:56 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-06-08 13:42:34 +0200 |
| commit | c662b043cdca89bf0f03fc37251000ac69a3a548 (patch) | |
| tree | c9b24c0a2ad6e764faac98f2611687bdb5354c47 /crypto/af_alg.c | |
| parent | fb800fa4c1f5aee1238267252e88a7837e645c02 (diff) | |
crypto: af_alg/hash: Support MSG_SPLICE_PAGES
Make AF_ALG sendmsg() support MSG_SPLICE_PAGES in the hashing code. This
causes pages to be spliced from the source iterator if possible.
This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.
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
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'crypto/af_alg.c')
| -rw-r--r-- | crypto/af_alg.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 3cf734835ccb..7d4b6016b83d 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -542,9 +542,14 @@ void af_alg_free_sg(struct af_alg_sgl *sgl) { int i; - if (sgl->need_unpin) - for (i = 0; i < sgl->sgt.nents; i++) - unpin_user_page(sg_page(&sgl->sgt.sgl[i])); + if (sgl->sgt.sgl) { + if (sgl->need_unpin) + for (i = 0; i < sgl->sgt.nents; i++) + unpin_user_page(sg_page(&sgl->sgt.sgl[i])); + if (sgl->sgt.sgl != sgl->sgl) + kvfree(sgl->sgt.sgl); + sgl->sgt.sgl = NULL; + } } EXPORT_SYMBOL_GPL(af_alg_free_sg); |