From 703394c1005caeccaaf64945c1b6d6cc3af0cd1d Mon Sep 17 00:00:00 2001 From: Rob Jones Date: Thu, 9 Oct 2014 15:28:01 -0700 Subject: [PATCH] mm/vmalloc.c: use seq_open_private() instead of seq_open() Using seq_open_private() removes boilerplate code from vmalloc_open(). The resultant code is shorter and easier to follow. However, please note that seq_open_private() call kzalloc() rather than kmalloc() which may affect timing due to the memory initialisation overhead. Signed-off-by: Rob Jones Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmalloc.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 2b0aa5486092..90520af7f186 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2646,21 +2646,11 @@ static const struct seq_operations vmalloc_op = { static int vmalloc_open(struct inode *inode, struct file *file) { - unsigned int *ptr = NULL; - int ret; - - if (IS_ENABLED(CONFIG_NUMA)) { - ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL); - if (ptr == NULL) - return -ENOMEM; - } - ret = seq_open(file, &vmalloc_op); - if (!ret) { - struct seq_file *m = file->private_data; - m->private = ptr; - } else - kfree(ptr); - return ret; + if (IS_ENABLED(CONFIG_NUMA)) + return seq_open_private(file, &vmalloc_op, + nr_node_ids * sizeof(unsigned int)); + else + return seq_open(file, &vmalloc_op); } static const struct file_operations proc_vmalloc_operations = {