ocfs2: Periodic quota syncing

This patch creates a work queue for periodic syncing of locally cached quota
information to the global quota files. We constantly queue a delayed work
item, to get the periodic behavior.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Jan Kara <jack@suse.cz>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h
index 1f1c86311b32..e2233d51507f 100644
--- a/fs/ocfs2/quota.h
+++ b/fs/ocfs2/quota.h
@@ -39,6 +39,7 @@ struct ocfs2_mem_dqinfo {
         unsigned int dqi_chunks;        /* Number of chunks in local quota file */
         unsigned int dqi_blocks;        /* Number of blocks allocated for local quota file */
         unsigned int dqi_syncms;        /* How often should we sync with other nodes */
+        unsigned int dqi_syncjiff;      /* Precomputed dqi_syncms in jiffies */
         struct list_head dqi_chunk;     /* List of chunks */
         struct inode *dqi_gqinode;      /* Global quota file inode */
         struct ocfs2_lock_res dqi_gqlock;       /* Lock protecting quota information structure */
@@ -47,6 +48,7 @@ struct ocfs2_mem_dqinfo {
         struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */
         struct buffer_head *dqi_ibh;    /* Buffer with information header */
         struct qtree_mem_dqinfo dqi_gi; /* Info about global file */
+        struct delayed_work dqi_sync_work;      /* Work for syncing dquots */
 };
 
 static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot)
@@ -90,4 +92,7 @@ struct buffer_head *ocfs2_read_quota_block(struct inode *inode,
 extern struct dquot_operations ocfs2_quota_operations;
 extern struct quota_format_type ocfs2_quota_format;
 
+int ocfs2_quota_setup(void);
+void ocfs2_quota_shutdown(void);
+
 #endif /* _OCFS2_QUOTA_H */