diff options
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index cfa7a5d22e72..16b22120b98f 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -384,7 +384,7 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) } /* - * perag get/put wrappers for eventual ref counting + * perag get/put wrappers for ref counting */ static inline struct xfs_perag * xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno) @@ -393,6 +393,12 @@ xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno) spin_lock(&mp->m_perag_lock); pag = radix_tree_lookup(&mp->m_perag_tree, agno); + if (pag) { + ASSERT(atomic_read(&pag->pag_ref) >= 0); + /* catch leaks in the positive direction during testing */ + ASSERT(atomic_read(&pag->pag_ref) < 1000); + atomic_inc(&pag->pag_ref); + } spin_unlock(&mp->m_perag_lock); return pag; } @@ -400,7 +406,8 @@ xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno) static inline void xfs_perag_put(struct xfs_perag *pag) { - /* nothing to see here, move along */ + ASSERT(atomic_read(&pag->pag_ref) > 0); + atomic_dec(&pag->pag_ref); } /* |