Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
authorLinus Torvalds <torvalds@linux-foundation.org>
Fri, 15 Sep 2017 03:01:41 +0000 (20:01 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 15 Sep 2017 03:01:41 +0000 (20:01 -0700)
Pull misc leftovers from Al Viro.

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix the __user misannotations in asm-generic get_user/put_user
  fput: Don't reinvent the wheel but use existing llist API
  namespace.c: Don't reinvent the wheel but use existing llist API

fs/file_table.c
fs/namespace.c
include/asm-generic/uaccess.h

index 72e861a35a7f7a05d185b496da5615c74a02552f..61517f57f8ef744e9915c33659cfba96c0a1f767 100644 (file)
@@ -233,12 +233,10 @@ static LLIST_HEAD(delayed_fput_list);
 static void delayed_fput(struct work_struct *unused)
 {
        struct llist_node *node = llist_del_all(&delayed_fput_list);
-       struct llist_node *next;
+       struct file *f, *t;
 
-       for (; node; node = next) {
-               next = llist_next(node);
-               __fput(llist_entry(node, struct file, f_u.fu_llist));
-       }
+       llist_for_each_entry_safe(f, t, node, f_u.fu_llist)
+               __fput(f);
 }
 
 static void ____fput(struct callback_head *work)
@@ -312,7 +310,7 @@ void put_filp(struct file *file)
 }
 
 void __init files_init(void)
-{ 
+{
        filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
                        SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL);
        percpu_counter_init(&nr_files, 0, GFP_KERNEL);
@@ -331,4 +329,4 @@ void __init files_maxfiles_init(void)
        n = ((totalram_pages - memreserve) * (PAGE_SIZE / 1024)) / 10;
 
        files_stat.max_files = max_t(unsigned long, n, NR_FILE);
-} 
+}
index e48ad0192d81c9ba6917fa5f235b07ce28410617..54059b142d6ba1153b8adab7114cd7587e0c3aad 100644 (file)
@@ -1182,12 +1182,10 @@ static LLIST_HEAD(delayed_mntput_list);
 static void delayed_mntput(struct work_struct *unused)
 {
        struct llist_node *node = llist_del_all(&delayed_mntput_list);
-       struct llist_node *next;
+       struct mount *m, *t;
 
-       for (; node; node = next) {
-               next = llist_next(node);
-               cleanup_mnt(llist_entry(node, struct mount, mnt_llist));
-       }
+       llist_for_each_entry_safe(m, t, node, mnt_llist)
+               cleanup_mnt(m);
 }
 static DECLARE_DELAYED_WORK(delayed_mntput_work, delayed_mntput);
 
index 723e81a6c162052e82849864d37794541ac82f38..2e51f6e7b3c26d4f6102db05211b5e7a88306dda 100644 (file)
@@ -75,10 +75,10 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
 
 #define put_user(x, ptr)                                       \
 ({                                                             \
-       void *__p = (ptr);                                      \
+       void __user *__p = (ptr);                               \
        might_fault();                                          \
        access_ok(VERIFY_WRITE, __p, sizeof(*ptr)) ?            \
-               __put_user((x), ((__typeof__(*(ptr)) *)__p)) :  \
+               __put_user((x), ((__typeof__(*(ptr)) __user *)__p)) :   \
                -EFAULT;                                        \
 })
 
@@ -137,10 +137,10 @@ extern int __put_user_bad(void) __attribute__((noreturn));
 
 #define get_user(x, ptr)                                       \
 ({                                                             \
-       const void *__p = (ptr);                                \
+       const void __user *__p = (ptr);                         \
        might_fault();                                          \
        access_ok(VERIFY_READ, __p, sizeof(*ptr)) ?             \
-               __get_user((x), (__typeof__(*(ptr)) *)__p) :    \
+               __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
                ((x) = (__typeof__(*(ptr)))0,-EFAULT);          \
 })