diff options
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/mm/util.c b/mm/util.c index 28c5356b9f1c..29189f48ee04 100644 --- a/mm/util.c +++ b/mm/util.c @@ -198,6 +198,16 @@ char *kmemdup_nul(const char *s, size_t len, gfp_t gfp) } EXPORT_SYMBOL(kmemdup_nul); +static kmem_buckets *user_buckets __ro_after_init; + +static int __init init_user_buckets(void) +{ + user_buckets = kmem_buckets_create("memdup_user", 0, 0, INT_MAX, NULL); + + return 0; +} +subsys_initcall(init_user_buckets); + /** * memdup_user - duplicate memory region from user space * @@ -211,7 +221,7 @@ void *memdup_user(const void __user *src, size_t len) { void *p; - p = kmalloc_track_caller(len, GFP_USER | __GFP_NOWARN); + p = kmem_buckets_alloc_track_caller(user_buckets, len, GFP_USER | __GFP_NOWARN); if (!p) return ERR_PTR(-ENOMEM); @@ -237,7 +247,7 @@ void *vmemdup_user(const void __user *src, size_t len) { void *p; - p = kvmalloc(len, GFP_USER); + p = kmem_buckets_valloc(user_buckets, len, GFP_USER); if (!p) return ERR_PTR(-ENOMEM); |