AuxXxilium/linux_dsm_epyc7002
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Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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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
This commit is contained in:
Linus Torvalds 2017-09-14 20:01:41 -07:00
commit 9e0ce554b0
3 changed files with 12 additions and 16 deletions
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12
fs/file_table.c
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@ -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);
}
}

8
fs/namespace.c
View 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);

8
include/asm-generic/uaccess.h
View 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); \
})