From: David Howells <dhowells@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>
Cc: David Howells <dhowells@redhat.com>,
Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
Jeff Layton <jlayton@kernel.org>,
David Hildenbrand <david@redhat.com>,
Jason Gunthorpe <jgg@nvidia.com>,
Logan Gunthorpe <logang@deltatee.com>,
Hillf Danton <hdanton@sina.com>,
Christian Brauner <brauner@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Christoph Hellwig <hch@lst.de>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
linux-trace-kernel@vger.kernel.org
Subject: [PATCH v22 26/31] trace: Convert trace/seq to use copy_splice_read()
Date: Mon, 22 May 2023 14:50:13 +0100 [thread overview]
Message-ID: <20230522135018.2742245-27-dhowells@redhat.com> (raw)
In-Reply-To: <20230522135018.2742245-1-dhowells@redhat.com>
For the splice from the trace seq buffer, just use copy_splice_read().
In the future, something better can probably be done by gifting pages from
seq->buf into the pipe, but that would require changing seq->buf into a
vmap over an array of pages.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Christoph Hellwig <hch@lst.de>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: Jens Axboe <axboe@kernel.dk>
cc: Steven Rostedt <rostedt@goodmis.org>
cc: Masami Hiramatsu <mhiramat@kernel.org>
cc: linux-kernel@vger.kernel.org
cc: linux-trace-kernel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: linux-block@vger.kernel.org
cc: linux-mm@kvack.org
---
kernel/trace/trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ebc59781456a..c210d02fac97 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5171,7 +5171,7 @@ static const struct file_operations tracing_fops = {
.open = tracing_open,
.read = seq_read,
.read_iter = seq_read_iter,
- .splice_read = generic_file_splice_read,
+ .splice_read = copy_splice_read,
.write = tracing_write_stub,
.llseek = tracing_lseek,
.release = tracing_release,
next prev parent reply other threads:[~2023-05-22 13:55 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-22 13:49 [PATCH v22 00/31] splice: Kill ITER_PIPE David Howells
2023-05-22 13:49 ` [PATCH v22 01/31] splice: Fix filemap_splice_read() to use the correct inode David Howells
2023-05-22 13:49 ` [PATCH v22 02/31] splice: Make filemap_splice_read() check s_maxbytes David Howells
2023-05-22 13:49 ` [PATCH v22 03/31] splice: Rename direct_splice_read() to copy_splice_read() David Howells
2023-05-22 13:49 ` [PATCH v22 04/31] splice: Clean up copy_splice_read() a bit David Howells
2023-05-22 13:49 ` [PATCH v22 05/31] splice: Make do_splice_to() generic and export it David Howells
2023-05-22 13:49 ` [PATCH v22 06/31] splice: Check for zero count in vfs_splice_read() David Howells
2023-05-22 13:49 ` [PATCH v22 07/31] splice: Make splice from an O_DIRECT fd use copy_splice_read() David Howells
2023-05-22 13:49 ` [PATCH v22 08/31] splice: Make splice from a DAX file " David Howells
2023-05-22 13:49 ` David Howells
2023-05-22 13:49 ` [PATCH v22 09/31] shmem: Implement splice-read David Howells
2023-05-22 13:49 ` [PATCH v22 10/31] overlayfs: " David Howells
2023-05-22 13:49 ` [PATCH v22 11/31] coda: " David Howells
2023-05-22 13:49 ` [PATCH v22 12/31] tty, proc, kernfs, random: Use copy_splice_read() David Howells
2023-05-22 13:50 ` [PATCH v22 13/31] net: Make sock_splice_read() use copy_splice_read() by default David Howells
2023-05-22 13:50 ` [PATCH v22 14/31] 9p: Add splice_read wrapper David Howells
2023-05-22 13:50 ` [PATCH v22 15/31] afs: Provide a splice-read wrapper David Howells
2023-05-22 13:50 ` [PATCH v22 16/31] ceph: " David Howells
2023-05-22 13:50 ` [PATCH v22 17/31] ecryptfs: " David Howells
2023-05-22 13:50 ` [PATCH v22 18/31] ext4: " David Howells
2023-05-22 13:50 ` [PATCH v22 19/31] f2fs: " David Howells
2023-05-22 13:50 ` [f2fs-dev] " David Howells
2023-05-24 3:01 ` Chao Yu
2023-05-24 3:01 ` [f2fs-dev] " Chao Yu
2023-07-06 0:18 ` patchwork-bot+f2fs
2023-07-06 0:18 ` patchwork-bot+f2fs
2023-05-22 13:50 ` [PATCH v22 20/31] nfs: " David Howells
2023-05-22 13:50 ` [PATCH v22 21/31] ntfs3: " David Howells
2023-05-22 13:50 ` [PATCH v22 22/31] ocfs2: " David Howells
2023-05-22 13:50 ` [Ocfs2-devel] " David Howells via Ocfs2-devel
2023-05-22 13:50 ` [PATCH v22 23/31] orangefs: " David Howells
2023-05-22 13:50 ` [PATCH v22 24/31] xfs: " David Howells
2023-05-22 13:50 ` [PATCH v22 25/31] zonefs: " David Howells
2023-05-23 2:48 ` Damien Le Moal
2023-05-23 20:43 ` David Howells
2023-05-24 23:13 ` Damien Le Moal
2023-05-22 13:50 ` David Howells [this message]
2023-05-22 13:50 ` [PATCH v22 27/31] cifs: Use filemap_splice_read() David Howells
2023-05-22 13:50 ` [PATCH v22 28/31] splice: Use filemap_splice_read() instead of generic_file_splice_read() David Howells
2023-05-22 13:50 ` [PATCH v22 29/31] splice: Remove generic_file_splice_read() David Howells
2023-05-22 13:50 ` [PATCH v22 30/31] iov_iter: Kill ITER_PIPE David Howells
2023-05-22 13:50 ` [PATCH v22 31/31] splice: kdoc for filemap_splice_read() and copy_splice_read() David Howells
2023-05-23 17:47 ` [PATCH v22 00/31] splice: Kill ITER_PIPE Jens Axboe
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