diff options
Diffstat (limited to 'mm/page_owner.c')
| -rw-r--r-- | mm/page_owner.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c index d80adfe702d3..925b6f44a444 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -3,7 +3,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/uaccess.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/stacktrace.h> #include <linux/page_owner.h> #include <linux/jump_label.h> @@ -351,6 +351,7 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn, .skip = 0 }; + count = min_t(size_t, count, PAGE_SIZE); kbuf = kmalloc(count, GFP_KERNEL); if (!kbuf) return -ENOMEM; @@ -624,16 +625,14 @@ static const struct file_operations proc_page_owner_operations = { static int __init pageowner_init(void) { - struct dentry *dentry; - if (!static_branch_unlikely(&page_owner_inited)) { pr_info("page_owner is disabled\n"); return 0; } - dentry = debugfs_create_file("page_owner", 0400, NULL, - NULL, &proc_page_owner_operations); + debugfs_create_file("page_owner", 0400, NULL, NULL, + &proc_page_owner_operations); - return PTR_ERR_OR_ZERO(dentry); + return 0; } late_initcall(pageowner_init) |