quota: Add lock annotations to struct members

Add annotation which lock protects which struct members to struct dquot
and struct mem_dqinfo.

Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/include/linux/quota.h b/include/linux/quota.h
index 074123975595d0842dc81cf52bbd33a30b793b06..5ac9de4fcd6fcad1ea0baae2a9979e4de264560f 100644 (file)
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -223,12 +223,12 @@ struct mem_dqinfo {
        struct quota_format_type *dqi_format;
        int dqi_fmt_id;         /* Id of the dqi_format - used when turning
                                 * quotas on after remount RW */
-       struct list_head dqi_dirty_list;        /* List of dirty dquots */
-       unsigned long dqi_flags;
-       unsigned int dqi_bgrace;
-       unsigned int dqi_igrace;
-       qsize_t dqi_max_spc_limit;
-       qsize_t dqi_max_ino_limit;
+       struct list_head dqi_dirty_list;        /* List of dirty dquots [dq_list_lock] */
+       unsigned long dqi_flags;        /* DFQ_ flags [dq_data_lock] */
+       unsigned int dqi_bgrace;        /* Space grace time [dq_data_lock] */
+       unsigned int dqi_igrace;        /* Inode grace time [dq_data_lock] */
+       qsize_t dqi_max_spc_limit;      /* Maximum space limit [static] */
+       qsize_t dqi_max_ino_limit;      /* Maximum inode limit [static] */
        void *dqi_priv;
 };
 
@@ -293,16 +293,16 @@ static inline void dqstats_dec(unsigned int type)
                                 * clear them when it sees fit. */
 
 struct dquot {
-       struct hlist_node dq_hash;      /* Hash list in memory */
-       struct list_head dq_inuse;      /* List of all quotas */
-       struct list_head dq_free;       /* Free list element */
-       struct list_head dq_dirty;      /* List of dirty dquots */
+       struct hlist_node dq_hash;      /* Hash list in memory [dq_list_lock] */
+       struct list_head dq_inuse;      /* List of all quotas [dq_list_lock] */
+       struct list_head dq_free;       /* Free list element [dq_list_lock] */
+       struct list_head dq_dirty;      /* List of dirty dquots [dq_list_lock] */
        struct mutex dq_lock;           /* dquot IO lock */
        spinlock_t dq_dqb_lock;         /* Lock protecting dq_dqb changes */
        atomic_t dq_count;              /* Use count */
        struct super_block *dq_sb;      /* superblock this applies to */
        struct kqid dq_id;              /* ID this applies to (uid, gid, projid) */
-       loff_t dq_off;                  /* Offset of dquot on disk */
+       loff_t dq_off;                  /* Offset of dquot on disk [dq_lock, stable once set] */
        unsigned long dq_flags;         /* See DQ_* */
        struct mem_dqblk dq_dqb;        /* Diskquota usage [dq_dqb_lock] */
 };