diff options
Diffstat (limited to 'fs/quota/dquot.c')
| -rw-r--r-- | fs/quota/dquot.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 93adcdd6a260..361a2a6f13e1 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -126,6 +126,8 @@ __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_data_lock); EXPORT_SYMBOL(dq_data_lock); DEFINE_STATIC_SRCU(dquot_srcu); +static DECLARE_WAIT_QUEUE_HEAD(dquot_ref_wq); + void __quota_error(struct super_block *sb, const char *func, const char *fmt, ...) { @@ -527,22 +529,18 @@ restart: continue; /* Wait for dquot users */ if (atomic_read(&dquot->dq_count)) { - DEFINE_WAIT(wait); - dqgrab(dquot); - prepare_to_wait(&dquot->dq_wait_unused, &wait, - TASK_UNINTERRUPTIBLE); spin_unlock(&dq_list_lock); - /* Once dqput() wakes us up, we know it's time to free + /* + * Once dqput() wakes us up, we know it's time to free * the dquot. * IMPORTANT: we rely on the fact that there is always * at most one process waiting for dquot to free. * Otherwise dq_count would be > 1 and we would never * wake up. */ - if (atomic_read(&dquot->dq_count) > 1) - schedule(); - finish_wait(&dquot->dq_wait_unused, &wait); + wait_event(dquot_ref_wq, + atomic_read(&dquot->dq_count) == 1); dqput(dquot); /* At this moment dquot() need not exist (it could be * reclaimed by prune_dqcache(). Hence we must @@ -754,7 +752,7 @@ we_slept: /* Releasing dquot during quotaoff phase? */ if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_id.type) && atomic_read(&dquot->dq_count) == 1) - wake_up(&dquot->dq_wait_unused); + wake_up(&dquot_ref_wq); spin_unlock(&dq_list_lock); return; } @@ -809,7 +807,6 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type) INIT_LIST_HEAD(&dquot->dq_inuse); INIT_HLIST_NODE(&dquot->dq_hash); INIT_LIST_HEAD(&dquot->dq_dirty); - init_waitqueue_head(&dquot->dq_wait_unused); dquot->dq_sb = sb; dquot->dq_id = make_kqid_invalid(type); atomic_set(&dquot->dq_count, 1); |