From 834057bf846691552a8906f7ed3f67546e5f897c Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 3 Aug 2017 11:18:23 +0200 Subject: quota: Allow disabling tracking of dirty dquots in a list Filesystems that are journalling quotas generally don't need tracking of dirty dquots in a list since forcing a transaction commit flushes all quotas anyway. Allow filesystem to say it doesn't want dquots to be tracked as it reduces contention on the dq_list_lock. Signed-off-by: Jan Kara --- fs/quota/dquot.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'fs/quota') diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 361a2a6f13e1..b867578e62c0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -344,6 +344,9 @@ int dquot_mark_dquot_dirty(struct dquot *dquot) if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) return 0; + if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NOLIST_DIRTY) + return test_and_set_bit(DQ_MOD_B, &dquot->dq_flags); + /* If quota is dirty already, we don't have to acquire dq_list_lock */ if (test_bit(DQ_MOD_B, &dquot->dq_flags)) return 1; @@ -385,6 +388,9 @@ static inline void dqput_all(struct dquot **dquot) static inline int clear_dquot_dirty(struct dquot *dquot) { + if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NOLIST_DIRTY) + return test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags); + spin_lock(&dq_list_lock); if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags)) { spin_unlock(&dq_list_lock); -- cgit v1.2.3-55-g7522