ocfs2: Implement quota syncing thread

index 33b47eb..f837265 100644
@@ -14,6 +14,7 @@
 #include <linux/quota.h>
 #include <linux/list.h>
 #include <linux/dqblk_qtree.h>
+#include <linux/timer.h>
 
 #include "ocfs2.h"
 

@@ -67,6 +68,7 @@ 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 */

@@ -74,6 +76,7 @@ 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 timer_list dqi_sync_timer;	/* Timer for syncing dquots */
 };
 
 static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot)

99 lines not on this page · raw message

index 719659b..17509bd 100644
@@ -367,6 +367,10 @@ static int ocfs2_local_free_info(struct super_block *sb, int type)
 	int mark_clean = 1, len;
 	int status;
 
+	/* At this point we know there are no more dquots and thus
+	 * even if there's some sync in the pdflush queue, it won't
+	 * find any dquots and return without doing anything */
+	del_timer_sync(&oinfo->dqi_sync_timer);
 	iput(oinfo->dqi_gqinode);
 	ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock);
 	ocfs2_lock_res_free(&oinfo->dqi_gqlock);