From: David Howells <dhowells@redhat.com>
To: Steve French <smfrench@gmail.com>
Cc: David Howells <dhowells@redhat.com>, Jens Axboe <axboe@kernel.dk>,
Al Viro <viro@zeniv.linux.org.uk>,
Shyam Prasad N <nspmangalore@gmail.com>,
Rohith Surabattula <rohiths.msft@gmail.com>,
Tom Talpey <tom@talpey.com>, Stefan Metzmacher <metze@samba.org>,
Christoph Hellwig <hch@infradead.org>,
Matthew Wilcox <willy@infradead.org>,
Jeff Layton <jlayton@kernel.org>,
linux-cifs@vger.kernel.org, linux-block@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Steve French <sfrench@samba.org>
Subject: [PATCH 13/17] cifs: Add a function to read into an iter from a socket
Date: Thu, 16 Feb 2023 21:47:41 +0000 [thread overview]
Message-ID: <20230216214745.3985496-14-dhowells@redhat.com> (raw)
In-Reply-To: <20230216214745.3985496-1-dhowells@redhat.com>
Add a helper function to read data from a socket into the given iterator.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
Link: https://lore.kernel.org/r/164928617874.457102.10021662143234315566.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165211419563.3154751.18431990381145195050.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165348879662.2106726.16881134187242702351.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165364826398.3334034.12541600783145647319.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/166126395495.708021.12328677373159554478.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/166697258876.61150.3530237818849429372.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166732031039.3186319.10691316510079412635.stgit@warthog.procyon.org.uk/ # rfc
---
fs/cifs/cifsproto.h | 3 +++
fs/cifs/connect.c | 14 ++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1207b39686fb..cb7a3fe89278 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -244,6 +244,9 @@ extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
struct page *page,
unsigned int page_offset,
unsigned int to_read);
+int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
+ struct iov_iter *iter,
+ unsigned int to_read);
extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b2a04b4e89a5..152b457b849f 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -765,6 +765,20 @@ cifs_read_page_from_socket(struct TCP_Server_Info *server, struct page *page,
return cifs_readv_from_socket(server, &smb_msg);
}
+int
+cifs_read_iter_from_socket(struct TCP_Server_Info *server, struct iov_iter *iter,
+ unsigned int to_read)
+{
+ struct msghdr smb_msg = { .msg_iter = *iter };
+ int ret;
+
+ iov_iter_truncate(&smb_msg.msg_iter, to_read);
+ ret = cifs_readv_from_socket(server, &smb_msg);
+ if (ret > 0)
+ iov_iter_advance(iter, ret);
+ return ret;
+}
+
static bool
is_smb_response(struct TCP_Server_Info *server, unsigned char type)
{
next prev parent reply other threads:[~2023-02-16 21:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-16 21:47 [PATCH 00/17] smb3: Use iov_iters down to the network transport and fix DIO page pinning David Howells
2023-02-16 21:47 ` [PATCH 01/17] mm: Pass info, not iter, into filemap_get_pages() David Howells
2023-02-16 21:47 ` [PATCH 02/17] splice: Add a func to do a splice from a buffered file without ITER_PIPE David Howells
2023-02-16 21:47 ` [PATCH 03/17] splice: Add a func to do a splice from an O_DIRECT " David Howells
2023-02-16 21:47 ` [PATCH 04/17] iov_iter: Define flags to qualify page extraction David Howells
2023-02-16 21:47 ` [PATCH 05/17] iov_iter: Add a function to extract a page list from an iterator David Howells
2023-02-16 21:47 ` [PATCH 06/17] splice: Export filemap/direct_splice_read() David Howells
2023-02-16 21:47 ` [PATCH 07/17] cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE David Howells
2023-02-16 21:47 ` [PATCH 08/17] netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator David Howells
2023-02-16 21:47 ` [PATCH 09/17] netfs: Add a function to extract an iterator into a scatterlist David Howells
2023-02-16 21:47 ` [PATCH 10/17] cifs: Add a function to build an RDMA SGE list from an iterator David Howells
2023-02-16 21:47 ` [PATCH 11/17] cifs: Add a function to Hash the contents of " David Howells
2023-02-17 3:04 ` Eric Biggers
2023-02-16 21:47 ` [PATCH 12/17] cifs: Add some helper functions David Howells
2023-02-16 21:47 ` David Howells [this message]
2023-02-16 21:47 ` [PATCH 14/17] cifs: Change the I/O paths to use an iterator rather than a page list David Howells
2023-02-17 5:48 ` Steve French
2023-02-17 8:08 ` David Howells
2023-02-17 17:48 ` Steve French
2023-02-16 21:47 ` [PATCH 15/17] cifs: Build the RDMA SGE list directly from an iterator David Howells
2023-02-16 21:47 ` [PATCH 16/17] cifs: Remove unused code David Howells
2023-02-16 21:47 ` [PATCH 17/17] cifs: DIO to/from KVEC-type iterators should now work David Howells
2023-02-17 5:52 ` [PATCH 00/17] smb3: Use iov_iters down to the network transport and fix DIO page pinning Steve French
2023-02-17 8:22 ` David Howells
2023-02-17 9:00 ` [PATCH 03/17] splice: Add a func to do a splice from an O_DIRECT file without ITER_PIPE David Howells
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