void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm);
/**
- * Data structure managing a client's cached clean pages. An LRU of
- * pages is maintained, along with other statistics.
+ * Data structure managing a client's cached pages. A count of
+ * "unstable" pages is maintained, and an LRU of clean pages is
+ * maintained. "unstable" pages are pages pinned by the ptlrpc
+ * layer for recovery purposes.
*/
struct cl_client_cache {
- cfs_atomic_t ccc_users; /* # of users (OSCs) of this data */
- cfs_list_t ccc_lru; /* LRU list of cached clean pages */
- spinlock_t ccc_lru_lock; /* lock for list */
- cfs_atomic_t ccc_lru_left; /* # of LRU entries available */
- unsigned long ccc_lru_max; /* Max # of LRU entries possible */
- unsigned int ccc_lru_shrinkers; /* # of threads reclaiming */
+ cfs_atomic_t ccc_users; /* # of users (OSCs) */
+ cfs_list_t ccc_lru; /* LRU of cached clean pages */
+ spinlock_t ccc_lru_lock; /* lock for list */
+ cfs_atomic_t ccc_lru_left; /* # of LRU entries available */
+ unsigned long ccc_lru_max; /* Max # of LRU entries */
+ unsigned int ccc_lru_shrinkers; /* # of threads shrinking */
+ cfs_atomic_t ccc_unstable_nr; /* # of pages pinned */
+ wait_queue_head_t ccc_unstable_waitq; /* Signaled on BRW commit */
};
#endif /*LCLIENT_H */