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Commit 4d2deb40 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Paul E. McKenney
Browse files

kernel: __rcu annotations 



This adds annotations for RCU operations in core kernel components

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarPaul 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: default avatarJosh Triplett <josh@joshtriplett.org>
parent d2c2486b

include/linux/fdtable.h

+3 −3
Original line number Diff line number Diff line
@@ -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) \

include/linux/fs.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/genhd.h

+3 −3
Original line number Diff line number Diff line
@@ -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;

include/linux/init_task.h

+2 −2
Original line number Diff line number Diff line
@@ -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",					\

include/linux/iocontext.h

+1 −1
Original line number Diff line number Diff line
@@ -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)