*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef OSC_INTERNAL_H
#define OAP_MAGIC 8675309
+#include <libcfs/linux/linux-mem.h>
#include <lustre_osc.h>
extern atomic_t osc_pool_req_count;
extern unsigned int osc_reqpool_maxreqcount;
extern struct ptlrpc_request_pool *osc_rq_pool;
-void osc_wake_cache_waiters(struct client_obd *cli);
int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes);
+void osc_schedule_grant_work(void);
void osc_update_next_shrink(struct client_obd *cli);
int lru_queue_work(const struct lu_env *env, void *data);
int osc_extent_finish(const struct lu_env *env, struct osc_extent *ext,
int sent, int rc);
-int osc_extent_release(const struct lu_env *env, struct osc_extent *ext);
+void osc_extent_release(const struct lu_env *env, struct osc_extent *ext);
int osc_lock_discard_pages(const struct lu_env *env, struct osc_object *osc,
pgoff_t start, pgoff_t end, bool discard);
-extern struct ptlrpc_request_set *PTLRPCD_SET;
+void osc_lock_lvb_update(const struct lu_env *env,
+ struct osc_object *osc,
+ struct ldlm_lock *dlmlock,
+ struct ost_lvb *lvb);
int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
__u64 *flags, union ldlm_policy_data *policy,
- struct ost_lvb *lvb, int kms_valid,
- osc_enqueue_upcall_f upcall,
+ struct ost_lvb *lvb, osc_enqueue_upcall_f upcall,
void *cookie, struct ldlm_enqueue_info *einfo,
struct ptlrpc_request_set *rqset, int async,
bool speculative);
-int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
- enum ldlm_type type, union ldlm_policy_data *policy,
- enum ldlm_mode mode, __u64 *flags, void *data,
- struct lustre_handle *lockh, int unref);
+int osc_match_base(const struct lu_env *env, struct obd_export *exp,
+ struct ldlm_res_id *res_id, enum ldlm_type type,
+ union ldlm_policy_data *policy, enum ldlm_mode mode,
+ __u64 *flags, struct osc_object *obj,
+ struct lustre_handle *lockh, enum ldlm_match_flags match_flags);
int osc_setattr_async(struct obd_export *exp, struct obdo *oa,
obd_enqueue_update_f upcall, void *cookie,
struct ptlrpc_request_set *rqset);
+int osc_fallocate_base(struct obd_export *exp, struct obdo *oa,
+ obd_enqueue_update_f upcall, void *cookie,
+ int mode);
int osc_sync_base(struct osc_object *obj, struct obdo *oa,
obd_enqueue_update_f upcall, void *cookie,
struct ptlrpc_request_set *rqset);
int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
struct list_head *ext_list, int cmd);
+void osc_send_empty_rpc(struct osc_object *osc, pgoff_t start);
unsigned long osc_lru_reserve(struct client_obd *cli, unsigned long npages);
void osc_lru_unreserve(struct client_obd *cli, unsigned long npages);
unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock);
-int osc_cleanup(struct obd_device *obd);
int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
-#ifdef CONFIG_PROC_FS
-extern struct lprocfs_vars lprocfs_osc_obd_vars[];
-int lproc_osc_attach_seqstat(struct obd_device *dev);
-#else
-static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
-#endif
+int osc_tunables_init(struct obd_device *obd);
extern struct lu_device_type osc_device_type;
return cli->cl_import->imp_obd->obd_name;
}
-#ifndef min_t
-#define min_t(type,x,y) \
- ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
-#endif
+static inline char list_empty_marker(struct list_head *list)
+{
+ return list_empty(list) ? '-' : '+';
+}
struct osc_async_args {
struct obd_info *aa_oi;
};
int osc_quota_setup(struct obd_device *obd);
-int osc_quota_cleanup(struct obd_device *obd);
-int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
+void osc_quota_cleanup(struct obd_device *obd);
+int osc_quota_setdq(struct client_obd *cli, __u64 xid, const unsigned int qid[],
u64 valid, u32 flags);
int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]);
int osc_quotactl(struct obd_device *unused, struct obd_export *exp,
void osc_inc_unstable_pages(struct ptlrpc_request *req);
void osc_dec_unstable_pages(struct ptlrpc_request *req);
bool osc_over_unstable_soft_limit(struct client_obd *cli);
+void osc_page_touch_at(const struct lu_env *env, struct cl_object *obj,
+ pgoff_t idx, size_t to);
struct ldlm_lock *osc_obj_dlmlock_at_pgoff(const struct lu_env *env,
struct osc_object *obj,
extern struct list_head osc_shrink_list;
/** spin lock to protect osc_shrink_list */
extern spinlock_t osc_shrink_lock;
+/** Whether enable page cache shrinker */
+extern bool osc_page_cache_shrink_enabled;
+
extern unsigned long osc_cache_shrink_count(struct shrinker *sk,
struct shrink_control *sc);
extern unsigned long osc_cache_shrink_scan(struct shrinker *sk,
struct shrink_control *sc);
+static inline unsigned int osc_max_write_chunks(const struct client_obd *cli)
+{
+ /*
+ * LU-8135:
+ *
+ * The maximum size of a single transaction is about 64MB in ZFS.
+ * #define DMU_MAX_ACCESS (64 * 1024 * 1024)
+ *
+ * Since ZFS is a copy-on-write file system, a single dirty page in
+ * a chunk will result in the rewrite of the whole chunk, therefore
+ * an RPC shouldn't be allowed to contain too many chunks otherwise
+ * it will make transaction size much bigger than 64MB, especially
+ * with big block size for ZFS.
+ *
+ * This piece of code is to make sure that OSC won't send write RPCs
+ * with too many chunks. The maximum chunk size that an RPC can cover
+ * is set to PTLRPC_MAX_BRW_SIZE, which is defined to 16MB. Ideally
+ * OST should tell the client what the biggest transaction size is,
+ * but it's good enough for now.
+ *
+ * This limitation doesn't apply to ldiskfs, which allows as many
+ * chunks in one RPC as we want. However, it won't have any benefits
+ * to have too many discontiguous pages in one RPC.
+ *
+ * An osc_extent won't cover over a RPC size, so the chunks in an
+ * osc_extent won't bigger than PTLRPC_MAX_BRW_SIZE >> chunkbits.
+ */
+ return PTLRPC_MAX_BRW_SIZE >> cli->cl_chunkbits;
+}
static inline void osc_set_io_portal(struct ptlrpc_request *req)
{
else
req->rq_request_portal = OST_IO_PORTAL;
}
+
#endif /* OSC_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff