From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>,
linux-fsdevel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] dax: silence an uninitialized variable warning
Date: Tue, 22 Mar 2016 14:38:49 +0300 [thread overview]
Message-ID: <20160322113848.GA4519@mwanda> (raw)
I'm not positive, but it looks like it might be possible to reach the
end of this function and return an uninitialized value for "rc". Anyway
it causes a static checker warning and let's silence it.
The warning was introduced in commit b2e0d1625e19 ('dax: fix lifetime of
in-kernel dax mappings with dax_map_atomic()').
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/fs/dax.c b/fs/dax.c
index 90322eb..3744e14 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -155,7 +155,8 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
loff_t pos = start, max = start, bh_max = start;
bool hole = false, need_wmb = false;
struct block_device *bdev = NULL;
- int rw = iov_iter_rw(iter), rc;
+ int rc = 0;
+ int rw = iov_iter_rw(iter);
long map_len = 0;
struct blk_dax_ctl dax = {
.addr = (void __pmem *) ERR_PTR(-EIO),
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>,
linux-fsdevel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] dax: silence an uninitialized variable warning
Date: Tue, 22 Mar 2016 11:38:49 +0000 [thread overview]
Message-ID: <20160322113848.GA4519@mwanda> (raw)
I'm not positive, but it looks like it might be possible to reach the
end of this function and return an uninitialized value for "rc". Anyway
it causes a static checker warning and let's silence it.
The warning was introduced in commit b2e0d1625e19 ('dax: fix lifetime of
in-kernel dax mappings with dax_map_atomic()').
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/fs/dax.c b/fs/dax.c
index 90322eb..3744e14 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -155,7 +155,8 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
loff_t pos = start, max = start, bh_max = start;
bool hole = false, need_wmb = false;
struct block_device *bdev = NULL;
- int rw = iov_iter_rw(iter), rc;
+ int rc = 0;
+ int rw = iov_iter_rw(iter);
long map_len = 0;
struct blk_dax_ctl dax = {
.addr = (void __pmem *) ERR_PTR(-EIO),
next reply other threads:[~2016-03-22 11:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-22 11:38 Dan Carpenter [this message]
2016-03-22 11:38 ` [patch] dax: silence an uninitialized variable warning Dan Carpenter
2016-03-22 17:26 ` Jeff Moyer
2016-03-22 17:26 ` Jeff Moyer
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