From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
Christoph Hellwig <hch@lst.de>,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 09/13] bpfilter: Pass a NULL pointer to kernel_read and kernel_write
Date: Sat, 3 Oct 2020 03:55:30 +0100 [thread overview]
Message-ID: <20201003025534.21045-10-willy@infradead.org> (raw)
In-Reply-To: <20201003025534.21045-1-willy@infradead.org>
We want to start at 0 and do not care about the updated value.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
net/bpfilter/bpfilter_kern.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/net/bpfilter/bpfilter_kern.c b/net/bpfilter/bpfilter_kern.c
index 51a941b56ec3..bca294c9253f 100644
--- a/net/bpfilter/bpfilter_kern.c
+++ b/net/bpfilter/bpfilter_kern.c
@@ -34,21 +34,18 @@ static void __stop_umh(void)
static int bpfilter_send_req(struct mbox_request *req)
{
struct mbox_reply reply;
- loff_t pos = 0;
ssize_t n;
if (!bpfilter_ops.info.tgid)
return -EFAULT;
- pos = 0;
n = kernel_write(bpfilter_ops.info.pipe_to_umh, req, sizeof(*req),
- &pos);
+ NULL);
if (n != sizeof(*req)) {
pr_err("write fail %zd\n", n);
goto stop;
}
- pos = 0;
n = kernel_read(bpfilter_ops.info.pipe_from_umh, &reply, sizeof(reply),
- &pos);
+ NULL);
if (n != sizeof(reply)) {
pr_err("read fail %zd\n", n);
goto stop;
--
2.28.0
next prev parent reply other threads:[~2020-10-03 2:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-03 2:55 [PATCH 00/13] Clean up kernel_read/kernel_write Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 01/13] fs: Allow a NULL pos pointer to __kernel_write Matthew Wilcox (Oracle)
2020-10-15 17:56 ` Christoph Hellwig
2020-10-03 2:55 ` [PATCH 02/13] fs: Allow a NULL pos pointer to __kernel_read Matthew Wilcox (Oracle)
2020-10-15 17:56 ` Christoph Hellwig
2020-10-03 2:55 ` [PATCH 03/13] fs/acct: Pass a NULL pointer to __kernel_write Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 04/13] um/mconsole: Pass a NULL pointer to kernel_read Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 05/13] x86/aout: " Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 06/13] aout: " Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 07/13] binfmt_flat: " Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 08/13] exec: " Matthew Wilcox (Oracle)
2020-10-03 2:55 ` Matthew Wilcox (Oracle) [this message]
2020-10-03 2:55 ` [PATCH 10/13] keys: Pass a NULL pointer to kernel_read and kernel_write Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 11/13] target: Pass a NULL pointer to kernel_write Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 12/13] proc: " Matthew Wilcox (Oracle)
2020-10-03 2:55 ` [PATCH 13/13] usermode: " Matthew Wilcox (Oracle)
2020-10-03 3:47 ` [PATCH 00/13] Clean up kernel_read/kernel_write Al Viro
2020-10-09 22:07 ` Eric Biggers
2020-10-15 17:56 ` Christoph Hellwig
2020-10-15 18:23 ` Al Viro
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