2 files changed, 21 insertions, 0 deletions

diff --git a/fs/seq_file.c b/fs/seq_file.c
index 7f40f30c55c5..6c959275f2d0 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -640,6 +640,26 @@ int seq_puts(struct seq_file *m, const char *s)
 }
 EXPORT_SYMBOL(seq_puts);
 
+/**
+ * seq_write - write arbitrary data to buffer
+ * @seq: seq_file identifying the buffer to which data should be written
+ * @data: data address
+ * @len: number of bytes
+ *
+ * Return 0 on success, non-zero otherwise.
+ */
+int seq_write(struct seq_file *seq, const void *data, size_t len)
+{
+        if (seq->count + len < seq->size) {
+                memcpy(seq->buf + seq->count, data, len);
+                seq->count += len;
+                return 0;
+        }
+        seq->count = seq->size;
+        return -1;
+}
+EXPORT_SYMBOL(seq_write);
+
 struct list_head *seq_list_start(struct list_head *head, loff_t pos)
 {
         struct list_head *lh;
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 004f3b3342c5..0c6a86b79596 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -43,6 +43,7 @@ int seq_release(struct inode *, struct file *);
 int seq_escape(struct seq_file *, const char *, const char *);
 int seq_putc(struct seq_file *m, char c);
 int seq_puts(struct seq_file *m, const char *s);
+int seq_write(struct seq_file *seq, const void *data, size_t len);
 
 int seq_printf(struct seq_file *, const char *, ...)
         __attribute__ ((format (printf,2,3)));