From: Sagi Grimberg <sagi@grimberg.me> To: linux-nvme@lists.infradead.org Cc: linux-block@vger.kernel.org, netdev@vger.kernel.org, Christoph Hellwig <hch@lst.de>, Keith Busch <keith.busch@intel.com>, "David S. Miller" <davem@davemloft.net> Subject: [PATCH v3 02/13] datagram: open-code copy_page_to_iter Date: Wed, 21 Nov 2018 17:56:00 -0800 [thread overview] Message-ID: <20181122015615.15763-3-sagi@grimberg.me> (raw) In-Reply-To: <20181122015615.15763-1-sagi@grimberg.me> From: Sagi Grimberg <sagi@lightbitslabs.com> This will be useful to consolidate skb_copy_and_hash_datagram_iter and skb_copy_and_csum_datagram to a single code path. Signed-off-by: Sagi Grimberg <sagi@lightbitslabs.com> --- net/core/datagram.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/core/datagram.c b/net/core/datagram.c index 57f3a6fcfc1e..abe642181b64 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -445,11 +445,14 @@ int skb_copy_datagram_iter(const struct sk_buff *skb, int offset, end = start + skb_frag_size(frag); if ((copy = end - offset) > 0) { + struct page *page = skb_frag_page(frag); + u8 *vaddr = kmap(page); + if (copy > len) copy = len; - n = copy_page_to_iter(skb_frag_page(frag), - frag->page_offset + offset - - start, copy, to); + n = copy_to_iter(vaddr + frag->page_offset + + offset - start, copy, to); + kunmap(page); offset += n; if (n != copy) goto short_copy; -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: sagi@grimberg.me (Sagi Grimberg) Subject: [PATCH v3 02/13] datagram: open-code copy_page_to_iter Date: Wed, 21 Nov 2018 17:56:00 -0800 [thread overview] Message-ID: <20181122015615.15763-3-sagi@grimberg.me> (raw) In-Reply-To: <20181122015615.15763-1-sagi@grimberg.me> From: Sagi Grimberg <sagi@lightbitslabs.com> This will be useful to consolidate skb_copy_and_hash_datagram_iter and skb_copy_and_csum_datagram to a single code path. Signed-off-by: Sagi Grimberg <sagi at lightbitslabs.com> --- net/core/datagram.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/core/datagram.c b/net/core/datagram.c index 57f3a6fcfc1e..abe642181b64 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -445,11 +445,14 @@ int skb_copy_datagram_iter(const struct sk_buff *skb, int offset, end = start + skb_frag_size(frag); if ((copy = end - offset) > 0) { + struct page *page = skb_frag_page(frag); + u8 *vaddr = kmap(page); + if (copy > len) copy = len; - n = copy_page_to_iter(skb_frag_page(frag), - frag->page_offset + offset - - start, copy, to); + n = copy_to_iter(vaddr + frag->page_offset + + offset - start, copy, to); + kunmap(page); offset += n; if (n != copy) goto short_copy; -- 2.17.1
next prev parent reply other threads:[~2018-11-22 1:57 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-11-22 1:55 [PATCH v3 00/13] TCP transport binding for NVMe over Fabrics Sagi Grimberg 2018-11-22 1:55 ` Sagi Grimberg 2018-11-22 1:55 ` [PATCH v3 01/13] ath6kl: add ath6kl_ prefix to crypto_type Sagi Grimberg 2018-11-22 1:55 ` Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg [this message] 2018-11-22 1:56 ` [PATCH v3 02/13] datagram: open-code copy_page_to_iter Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 03/13] iov_iter: pass void csum pointer to csum_and_copy_to_iter Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 04/13] datagram: consolidate datagram copy to iter helpers Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 05/13] iov_iter: introduce hash_and_copy_to_iter helper Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 06/13] datagram: introduce skb_copy_and_hash_datagram_iter helper Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 07/13] nvmet: Add install_queue callout Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 08/13] nvme-fabrics: allow user passing header digest Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 09/13] nvme-fabrics: allow user passing data digest Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 10/13] nvme-tcp: Add protocol header Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 11/13] nvmet-tcp: add NVMe over TCP target driver Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 9:06 ` Christoph Hellwig 2018-11-22 9:06 ` Christoph Hellwig 2018-11-25 9:13 ` Sagi Grimberg 2018-11-25 9:13 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 12/13] nvmet: allow configfs tcp trtype configuration Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH v3 13/13] nvme-tcp: add NVMe over TCP host driver Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 8:02 ` Christoph Hellwig 2018-11-22 8:02 ` Christoph Hellwig 2018-11-25 9:10 ` Sagi Grimberg 2018-11-25 9:10 ` Sagi Grimberg 2018-11-27 0:05 ` Max Gurtovoy 2018-11-27 0:05 ` Max Gurtovoy 2018-11-27 7:48 ` Sagi Grimberg 2018-11-27 7:48 ` Sagi Grimberg 2018-11-27 10:20 ` Max Gurtovoy 2018-11-27 10:20 ` Max Gurtovoy 2018-11-22 1:56 ` [PATCH nvme-cli v3 14/13] fabrics: use trtype_str when parsing a discovery log entry Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH nvme-cli v3 15/13] nvme: Add TCP transport Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-26 15:47 ` Keith Busch 2018-11-26 15:47 ` Keith Busch 2018-11-27 7:45 ` Sagi Grimberg 2018-11-27 7:45 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH nvme-cli v3 16/13] fabrics: add tcp port tsas decoding Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg 2018-11-22 1:56 ` [PATCH nvme-cli v3 17/13] fabrics: add transport header and data digest Sagi Grimberg 2018-11-22 1:56 ` Sagi Grimberg
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