From: Tobias Klauser <tklauser@distanz.ch>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH] fs: adjust dirtytime_interval_handler definition to match prototype
Date: Tue, 25 Aug 2020 12:55:21 +0200 [thread overview]
Message-ID: <20200825105521.4563-1-tklauser@distanz.ch> (raw)
Commit 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler")
changed ctl_table.proc_handler to take a kernel pointer. Adjust the
definition of dirtytime_interval_handler to match its prototype in
linux/writeback.h which fixes the following sparse error/warning:
fs/fs-writeback.c:2189:50: warning: incorrect type in argument 3 (different address spaces)
fs/fs-writeback.c:2189:50: expected void *
fs/fs-writeback.c:2189:50: got void [noderef] __user *buffer
fs/fs-writeback.c:2184:5: error: symbol 'dirtytime_interval_handler' redeclared with different type (incompatible argument 3 (different address spaces)):
fs/fs-writeback.c:2184:5: int extern [addressable] [signed] [toplevel] dirtytime_interval_handler( ... )
fs/fs-writeback.c: note: in included file:
./include/linux/writeback.h:374:5: note: previously declared as:
./include/linux/writeback.h:374:5: int extern [addressable] [signed] [toplevel] dirtytime_interval_handler( ... )
Fixes: 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler")
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
fs/fs-writeback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index a605c3dddabc..7a6e6155807c 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2182,7 +2182,7 @@ static int __init start_dirtytime_writeback(void)
__initcall(start_dirtytime_writeback);
int dirtytime_interval_handler(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+ void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
--
2.27.0
next reply other threads:[~2020-08-25 10:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 10:55 Tobias Klauser [this message]
2020-09-07 9:31 [PATCH] fs: adjust dirtytime_interval_handler definition to match prototype Tobias Klauser
2020-09-08 11:31 ` Jan Kara
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