[PATCH] teach seq_file to discard entries
Allow ->show() return SEQ_SKIP; that will discard all
output from that element and move on.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 1da1e62..d65796d 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -30,6 +30,8 @@
int (*show) (struct seq_file *m, void *v);
};
+#define SEQ_SKIP 1
+
int seq_open(struct file *, const struct seq_operations *);
ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
loff_t seq_lseek(struct file *, loff_t, int);