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kernel: __rcu annotations

This adds annotations for RCU operations in core kernel components

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
master
Arnd Bergmann 12 years ago
committed by Paul E. McKenney
parent
commit
4d2deb40b2
  1. 6
      include/linux/fdtable.h
  2. 2
      include/linux/fs.h
  3. 6
      include/linux/genhd.h
  4. 4
      include/linux/init_task.h
  5. 2
      include/linux/iocontext.h
  6. 2
      include/linux/mm_types.h

6
include/linux/fdtable.h

@ -31,7 +31,7 @@ struct embedded_fd_set {
struct fdtable {
unsigned int max_fds;
struct file ** fd; /* current fd array */
struct file __rcu **fd; /* current fd array */
fd_set *close_on_exec;
fd_set *open_fds;
struct rcu_head rcu;
@ -46,7 +46,7 @@ struct files_struct {
* read mostly part
*/
atomic_t count;
struct fdtable *fdt;
struct fdtable __rcu *fdt;
struct fdtable fdtab;
/*
* written part on a separate cache line in SMP
@ -55,7 +55,7 @@ struct files_struct {
int next_fd;
struct embedded_fd_set close_on_exec_init;
struct embedded_fd_set open_fds_init;
struct file * fd_array[NR_OPEN_DEFAULT];
struct file __rcu * fd_array[NR_OPEN_DEFAULT];
};
#define rcu_dereference_check_fdtable(files, fdtfd) \

2
include/linux/fs.h

@ -1380,7 +1380,7 @@ struct super_block {
* Saved mount options for lazy filesystems using
* generic_show_options()
*/
char *s_options;
char __rcu *s_options;
};
extern struct timespec current_fs_time(struct super_block *sb);

6
include/linux/genhd.h

@ -129,8 +129,8 @@ struct blk_scsi_cmd_filter {
struct disk_part_tbl {
struct rcu_head rcu_head;
int len;
struct hd_struct *last_lookup;
struct hd_struct *part[];
struct hd_struct __rcu *last_lookup;
struct hd_struct __rcu *part[];
};
struct gendisk {
@ -149,7 +149,7 @@ struct gendisk {
* non-critical accesses use RCU. Always access through
* helpers.
*/
struct disk_part_tbl *part_tbl;
struct disk_part_tbl __rcu *part_tbl;
struct hd_struct part0;
const struct block_device_operations *fops;

4
include/linux/init_task.h

@ -137,8 +137,8 @@ extern struct cred init_cred;
.children = LIST_HEAD_INIT(tsk.children), \
.sibling = LIST_HEAD_INIT(tsk.sibling), \
.group_leader = &tsk, \
.real_cred = &init_cred, \
.cred = &init_cred, \
RCU_INIT_POINTER(.real_cred, &init_cred), \
RCU_INIT_POINTER(.cred, &init_cred), \
.cred_guard_mutex = \
__MUTEX_INITIALIZER(tsk.cred_guard_mutex), \
.comm = "swapper", \

2
include/linux/iocontext.h

@ -53,7 +53,7 @@ struct io_context {
struct radix_tree_root radix_root;
struct hlist_head cic_list;
void *ioc_data;
void __rcu *ioc_data;
};
static inline struct io_context *ioc_task_link(struct io_context *ioc)

2
include/linux/mm_types.h

@ -299,7 +299,7 @@ struct mm_struct {
* new_owner->mm == mm
* new_owner->alloc_lock is held
*/
struct task_struct *owner;
struct task_struct __rcu *owner;
#endif
#ifdef CONFIG_PROC_FS

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