Commit 08a84e25 authored by David Sterba's avatar David Sterba
Browse files

btrfs: introduce _in_rcu variants of message printing functions 



Due to the missing variants there are messages that lack the information
printed by btrfs_info etc helpers.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 9ffecb10

fs/btrfs/ctree.h

+29 −0
Original line number Diff line number Diff line
@@ -4039,14 +4039,43 @@ void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) 
#define btrfs_info(fs_info, fmt, args...) \

	btrfs_printk(fs_info, KERN_INFO fmt, ##args)



/*

 * Wrappers that use printk_in_rcu

 */

#define btrfs_emerg_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args)

#define btrfs_alert_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args)

#define btrfs_crit_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args)

#define btrfs_err_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args)

#define btrfs_warn_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args)

#define btrfs_notice_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args)

#define btrfs_info_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args)



#ifdef DEBUG

#define btrfs_debug(fs_info, fmt, args...) \

	btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)

#define btrfs_debug_in_rcu(fs_info, fmt, args...) \

	btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)

#else

#define btrfs_debug(fs_info, fmt, args...) \

    no_printk(KERN_DEBUG fmt, ##args)

#define btrfs_debug_in_rcu(fs_info, fmt, args...) \

	no_printk(KERN_DEBUG fmt, ##args)

#endif



#define btrfs_printk_in_rcu(fs_info, fmt, args...)	\

do {							\

	rcu_read_lock();				\

	btrfs_printk(fs_info, fmt, ##args);		\

	rcu_read_unlock();				\

} while (0)



#ifdef CONFIG_BTRFS_ASSERT



__cold