diff options
Diffstat (limited to 'fs/quota/dquot.c')
| -rw-r--r-- | fs/quota/dquot.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 7a10e047bc33..4f7f451ca70d 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1102,6 +1102,14 @@ static void dquot_claim_reserved_space(struct dquot *dquot, qsize_t number) dquot->dq_dqb.dqb_rsvspace -= number; } +static void dquot_reclaim_reserved_space(struct dquot *dquot, qsize_t number) +{ + if (WARN_ON_ONCE(dquot->dq_dqb.dqb_curspace < number)) + number = dquot->dq_dqb.dqb_curspace; + dquot->dq_dqb.dqb_rsvspace += number; + dquot->dq_dqb.dqb_curspace -= number; +} + static inline void dquot_free_reserved_space(struct dquot *dquot, qsize_t number) { @@ -1536,6 +1544,15 @@ void inode_claim_rsv_space(struct inode *inode, qsize_t number) } EXPORT_SYMBOL(inode_claim_rsv_space); +void inode_reclaim_rsv_space(struct inode *inode, qsize_t number) +{ + spin_lock(&inode->i_lock); + *inode_reserved_space(inode) += number; + __inode_sub_bytes(inode, number); + spin_unlock(&inode->i_lock); +} +EXPORT_SYMBOL(inode_reclaim_rsv_space); + void inode_sub_rsv_space(struct inode *inode, qsize_t number) { spin_lock(&inode->i_lock); @@ -1710,6 +1727,35 @@ int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) EXPORT_SYMBOL(dquot_claim_space_nodirty); /* + * Convert allocated space back to in-memory reserved quotas + */ +void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number) +{ + int cnt; + + if (!dquot_active(inode)) { + inode_reclaim_rsv_space(inode, number); + return; + } + + down_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + spin_lock(&dq_data_lock); + /* Claim reserved quotas to allocated quotas */ + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { + if (inode->i_dquot[cnt]) + dquot_reclaim_reserved_space(inode->i_dquot[cnt], + number); + } + /* Update inode bytes */ + inode_reclaim_rsv_space(inode, number); + spin_unlock(&dq_data_lock); + mark_all_dquot_dirty(inode->i_dquot); + up_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + return; +} +EXPORT_SYMBOL(dquot_reclaim_space_nodirty); + +/* * This operation can block, but only after everything is updated */ void __dquot_free_space(struct inode *inode, qsize_t number, int flags) |