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| author | Paul Moore <pmoore@redhat.com> | 2014-06-17 17:30:23 -0400 |
|---|---|---|
| committer | Paul Moore <pmoore@redhat.com> | 2014-06-17 17:30:23 -0400 |
| commit | 170b5910d9fbea79de1bb40df22eda5f98250c0c (patch) | |
| tree | ca9560e878d2842d45c6f99077d0d8b8f8b0f9ba /include/linux/quotaops.h | |
| parent | 47dd0b76ace953bd2c0479076db0d3e3b9594003 (diff) | |
| parent | 1860e379875dfe7271c649058aeddffe5afd9d0d (diff) | |
Merge tag 'v3.15' into next
Linux 3.15
Diffstat (limited to 'include/linux/quotaops.h')
| -rw-r--r-- | include/linux/quotaops.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 6965fe394c3..1d3eee594cd 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -46,6 +46,14 @@ void inode_reclaim_rsv_space(struct inode *inode, qsize_t number); void dquot_initialize(struct inode *inode); void dquot_drop(struct inode *inode); struct dquot *dqget(struct super_block *sb, struct kqid qid); +static inline struct dquot *dqgrab(struct dquot *dquot) +{ + /* Make sure someone else has active reference to dquot */ + WARN_ON_ONCE(!atomic_read(&dquot->dq_count)); + WARN_ON_ONCE(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)); + atomic_inc(&dquot->dq_count); + return dquot; +} void dqput(struct dquot *dquot); int dquot_scan_active(struct super_block *sb, int (*fn)(struct dquot *dquot, unsigned long priv), |