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authorJan Engelhardt <jengelh@computergmbh.de>2008-03-28 20:09:39 +0100
committerJonathan Corbet <corbet@lwn.net>2008-03-30 11:05:04 -0600
commitf3271f656458063e9bb0da9ba920771ecc6f024c (patch)
tree417eff2d05186b90a65097da5c90a921c13defa9 /Documentation/filesystems
parentef40203a09823bc2c69168ffa626c46365e3ca2c (diff)
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Fixes to the seq_file document
On Friday 2008-03-28 19:20, Jonathan Corbet wrote: >commit 9756ccfda31b4c4544aa010aacf71b6672d668e8 >Date: Fri Mar 28 11:19:56 2008 -0600 > > Add the seq_file documentation patch on top: - add const qualifiers - remove void* casts - use proper specifier (%Ld is not valid) Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/seq_file.txt14
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/filesystems/seq_file.txt b/Documentation/filesystems/seq_file.txt
index 92975ee..cc6cdb9 100644
--- a/Documentation/filesystems/seq_file.txt
+++ b/Documentation/filesystems/seq_file.txt
@@ -107,8 +107,8 @@ complete. Here's the example version:
static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
- loff_t *spos = (loff_t *) v;
- *pos = ++(*spos);
+ loff_t *spos = v;
+ *pos = ++*spos;
return spos;
}
@@ -127,8 +127,8 @@ something goes wrong. The example module's show() function is:
static int ct_seq_show(struct seq_file *s, void *v)
{
- loff_t *spos = (loff_t *) v;
- seq_printf(s, "%Ld\n", *spos);
+ loff_t *spos = v;
+ seq_printf(s, "%lld\n", (long long)*spos);
return 0;
}
@@ -136,7 +136,7 @@ We will look at seq_printf() in a moment. But first, the definition of the
seq_file iterator is finished by creating a seq_operations structure with
the four functions we have just defined:
- static struct seq_operations ct_seq_ops = {
+ static const struct seq_operations ct_seq_ops = {
.start = ct_seq_start,
.next = ct_seq_next,
.stop = ct_seq_stop,
@@ -204,7 +204,7 @@ line, as in the example module:
static int ct_open(struct inode *inode, struct file *file)
{
return seq_open(file, &ct_seq_ops);
- };
+ }
Here, the call to seq_open() takes the seq_operations structure we created
before, and gets set up to iterate through the virtual file.
@@ -219,7 +219,7 @@ The other operations of interest - read(), llseek(), and release() - are
all implemented by the seq_file code itself. So a virtual file's
file_operations structure will look like:
- static struct file_operations ct_file_ops = {
+ static const struct file_operations ct_file_ops = {
.owner = THIS_MODULE,
.open = ct_open,
.read = seq_read,
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