From b208ce32927ac2c4bf14edebfb3197acd7673165 Mon Sep 17 00:00:00 2001 From: Rob Jones Date: Thu, 9 Oct 2014 15:28:03 -0700 Subject: [PATCH] mm/slab.c: use __seq_open_private() instead of seq_open() Using __seq_open_private() removes boilerplate code from slabstats_open() The resultant code is shorter and easier to follow. This patch does not change any functionality. Signed-off-by: Rob Jones Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/slab.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 655d65c3f010..154aac8411c5 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -4178,19 +4178,15 @@ static const struct seq_operations slabstats_op = { static int slabstats_open(struct inode *inode, struct file *file) { - unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL); - int ret = -ENOMEM; - if (n) { - ret = seq_open(file, &slabstats_op); - if (!ret) { - struct seq_file *m = file->private_data; - *n = PAGE_SIZE / (2 * sizeof(unsigned long)); - m->private = n; - n = NULL; - } - kfree(n); - } - return ret; + unsigned long *n; + + n = __seq_open_private(file, &slabstats_op, PAGE_SIZE); + if (!n) + return -ENOMEM; + + *n = PAGE_SIZE / (2 * sizeof(unsigned long)); + + return 0; } static const struct file_operations proc_slabstats_operations = { -- 2.20.1