* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define LOV_INTERNAL_H
#include <obd_class.h>
-#include <obd_lov.h>
#include <lustre/lustre_user.h>
-struct lov_lock_handles {
- struct portals_handle llh_handle;
- cfs_atomic_t llh_refcount;
- int llh_stripe_count;
- struct lustre_handle llh_handles[0];
-};
-
-struct lov_request {
- struct obd_info rq_oi;
- struct lov_request_set *rq_rqset;
+/* lov_do_div64(a, b) returns a % b, and a = a / b.
+ * The 32-bit code is LOV-specific due to knowing about stripe limits in
+ * order to reduce the divisor to a 32-bit number. If the divisor is
+ * already a 32-bit value the compiler handles this directly. */
+#if BITS_PER_LONG == 64
+# define lov_do_div64(n, base) ({ \
+ uint64_t __base = (base); \
+ uint64_t __rem; \
+ __rem = ((uint64_t)(n)) % __base; \
+ (n) = ((uint64_t)(n)) / __base; \
+ __rem; \
+})
+#elif BITS_PER_LONG == 32
+# define lov_do_div64(n, base) ({ \
+ uint64_t __rem; \
+ if ((sizeof(base) > 4) && (((base) & 0xffffffff00000000ULL) != 0)) { \
+ int __remainder; \
+ LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov " \
+ "division %llu / %llu\n", (n), (uint64_t)(base)); \
+ __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \
+ (n) >>= LOV_MIN_STRIPE_BITS; \
+ __rem = do_div(n, (base) >> LOV_MIN_STRIPE_BITS); \
+ __rem <<= LOV_MIN_STRIPE_BITS; \
+ __rem += __remainder; \
+ } else { \
+ __rem = do_div(n, base); \
+ } \
+ __rem; \
+})
+#endif
- cfs_list_t rq_link;
+#define pool_tgt_size(p) ((p)->pool_obds.op_size)
+#define pool_tgt_count(p) ((p)->pool_obds.op_count)
+#define pool_tgt_array(p) ((p)->pool_obds.op_array)
+#define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
- int rq_idx; /* index in lov->tgts array */
- int rq_stripe; /* stripe number */
- int rq_complete;
- int rq_rc;
- int rq_buflen; /* length of sub_md */
+struct pool_desc {
+ char pool_name[LOV_MAXPOOLNAME + 1];
+ struct ost_pool pool_obds;
+ atomic_t pool_refcount;
+ struct hlist_node pool_hash; /* access by poolname */
+ struct list_head pool_list; /* serial access */
+ struct proc_dir_entry *pool_proc_entry;
+ struct obd_device *pool_lobd; /* owner */
+};
- obd_count rq_oabufs;
- obd_count rq_pgaidx;
+struct lov_request {
+ struct obd_info rq_oi;
+ struct lov_request_set *rq_rqset;
+ struct list_head rq_link;
+ int rq_idx; /* index in lov->tgts array */
+ int rq_stripe; /* stripe number */
+ int rq_complete;
+ int rq_rc;
};
struct lov_request_set {
- struct ldlm_enqueue_info *set_ei;
- struct obd_info *set_oi;
- cfs_atomic_t set_refcount;
- struct obd_export *set_exp;
- /* XXX: There is @set_exp already, however obd_statfs gets obd_device
- only. */
- struct obd_device *set_obd;
- int set_count;
- cfs_atomic_t set_completes;
- cfs_atomic_t set_success;
- cfs_atomic_t set_finish_checked;
- struct llog_cookie *set_cookies;
- int set_cookie_sent;
- struct obd_trans_info *set_oti;
- obd_count set_oabufs;
- struct brw_page *set_pga;
- struct lov_lock_handles *set_lockh;
- cfs_list_t set_list;
- wait_queue_head_t set_waitq;
- spinlock_t set_lock;
+ struct obd_info *set_oi;
+ atomic_t set_refcount;
+ struct obd_export *set_exp;
+ /* XXX: There is @set_exp already, however obd_statfs gets
+ obd_device only. */
+ struct obd_device *set_obd;
+ int set_count;
+ atomic_t set_completes;
+ atomic_t set_success;
+ atomic_t set_finish_checked;
+ struct llog_cookie *set_cookies;
+ struct list_head set_list;
+ wait_queue_head_t set_waitq;
};
extern struct kmem_cache *lov_oinfo_slab;
-void lov_finish_set(struct lov_request_set *set);
+extern struct lu_kmem_descr lov_caches[];
-static inline void lov_get_reqset(struct lov_request_set *set)
-{
- LASSERT(set != NULL);
- LASSERT(cfs_atomic_read(&set->set_refcount) > 0);
- cfs_atomic_inc(&set->set_refcount);
-}
+void lov_finish_set(struct lov_request_set *set);
static inline void lov_put_reqset(struct lov_request_set *set)
{
- if (cfs_atomic_dec_and_test(&set->set_refcount))
- lov_finish_set(set);
-}
-
-static inline struct lov_lock_handles *
-lov_handle2llh(const struct lustre_handle *handle)
-{
- LASSERT(handle != NULL);
- return class_handle2object(handle->cookie, NULL);
-}
-
-static inline void lov_llh_put(struct lov_lock_handles *llh)
-{
- CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
- cfs_atomic_read(&llh->llh_refcount) - 1);
- LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 &&
- cfs_atomic_read(&llh->llh_refcount) < 0x5a5a);
- if (cfs_atomic_dec_and_test(&llh->llh_refcount)) {
- class_handle_unhash(&llh->llh_handle);
- /* The structure may be held by other threads because RCU.
- * -jxiong */
- if (cfs_atomic_read(&llh->llh_refcount))
- return;
-
- OBD_FREE_RCU(llh, sizeof *llh +
- sizeof(*llh->llh_handles) * llh->llh_stripe_count,
- &llh->llh_handle);
- }
+ if (atomic_dec_and_test(&set->set_refcount))
+ lov_finish_set(set);
}
#define lov_uuid2str(lv, index) \
(char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
/* lov_merge.c */
-void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
- struct lov_stripe_md *lsm, int stripeno, int *set);
-int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
- struct ost_lvb *lvb, int kms_only);
-int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
- obd_off size, int shrink);
+void lov_merge_attrs(struct obdo *tgt, struct obdo *src, u64 valid,
+ struct lov_stripe_md *lsm, int stripeno, int *set);
int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
struct ost_lvb *lvb, __u64 *kms_place);
/* lov_offset.c */
-obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
- int stripeno);
-int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
- int stripeno, obd_off *obd_off);
-obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
- int stripeno);
+u64 lov_stripe_size(struct lov_stripe_md *lsm, u64 ost_size, int stripeno);
+int lov_stripe_offset(struct lov_stripe_md *lsm, loff_t lov_off, int stripeno,
+ loff_t *obd_off);
+loff_t lov_size_to_stripe(struct lov_stripe_md *lsm, u64 file_size,
+ int stripeno);
int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
- obd_off start, obd_off end,
- obd_off *obd_start, obd_off *obd_end);
-int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
-
-/* lov_qos.c */
-#define LOV_USES_ASSIGNED_STRIPE 0
-#define LOV_USES_DEFAULT_STRIPE 1
-int qos_add_tgt(struct obd_device *obd, __u32 index);
-int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
-void qos_shrink_lsm(struct lov_request_set *set);
-int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
-void qos_update(struct lov_obd *lov);
-void qos_statfs_done(struct lov_obd *lov);
-void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
-int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
+ loff_t start, loff_t end,
+ loff_t *obd_start, loff_t *obd_end);
+int lov_stripe_number(struct lov_stripe_md *lsm, loff_t lov_off);
+pgoff_t lov_stripe_pgoff(struct lov_stripe_md *lsm, pgoff_t stripe_index,
+ int stripe);
/* lov_request.c */
void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
int lov_update_common_set(struct lov_request_set *set,
struct lov_request *req, int rc);
int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx);
-int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
- struct lov_stripe_md **ea, struct obdo *src_oa,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int cb_create_update(void *cookie, int rc);
-int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
-int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
- obd_count oa_bufs, struct brw_page *pga,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int lov_fini_brw_set(struct lov_request_set *set);
int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
struct lov_request_set **reqset);
int lov_fini_getattr_set(struct lov_request_set *set);
-int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
- struct obdo *src_oa, struct lov_stripe_md *lsm,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int lov_update_destroy_set(struct lov_request_set *set,
- struct lov_request *req, int rc);
-int lov_fini_destroy_set(struct lov_request_set *set);
int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
struct obd_trans_info *oti,
struct lov_request_set **reqset);
int lov_update_setattr_set(struct lov_request_set *set,
struct lov_request *req, int rc);
int lov_fini_setattr_set(struct lov_request_set *set);
-int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int lov_fini_punch_set(struct lov_request_set *set);
-int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
- obd_off start, obd_off end,
- struct lov_request_set **reqset);
-int lov_fini_sync_set(struct lov_request_set *set);
-int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
- struct ldlm_enqueue_info *einfo,
- struct lov_request_set **reqset);
-int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
- struct ptlrpc_request_set *rqset);
-int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_stripe_md *lsm,
- ldlm_policy_data_t *policy, __u32 mode,
- struct lustre_handle *lockh,
- struct lov_request_set **reqset);
-int lov_fini_match_set(struct lov_request_set *set, __u32 mode, __u64 flags);
-int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_stripe_md *lsm,
- __u32 mode, struct lustre_handle *lockh,
- struct lov_request_set **reqset);
-int lov_fini_cancel_set(struct lov_request_set *set);
int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
struct lov_request_set **reqset);
void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
/* lov_obd.c */
+void lov_stripe_lock(struct lov_stripe_md *md);
+void lov_stripe_unlock(struct lov_stripe_md *md);
void lov_fix_desc(struct lov_desc *desc);
void lov_fix_desc_stripe_size(__u64 *val);
void lov_fix_desc_stripe_count(__u32 *val);
__u32 *indexp, int *genp);
int lov_del_target(struct obd_device *obd, __u32 index,
struct obd_uuid *uuidp, int gen);
-/* lov_log.c */
-int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
- struct obd_device *tgt, int *idx);
-int lov_llog_finish(struct obd_device *obd, int count);
+int lov_getattr_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
/* lov_pack.c */
int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
struct lov_stripe_md *lsm);
int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
struct lov_mds_md *lmm, int lmm_bytes);
-int lov_setstripe(struct obd_export *exp, int max_lmm_size,
- struct lov_stripe_md **lsmp, struct lov_user_md *lump);
-int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
- struct lov_user_md *lump);
-int lov_getstripe(struct obd_export *exp,
- struct lov_stripe_md *lsm, struct lov_user_md *lump);
int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
int pattern, int magic);
int lov_free_memmd(struct lov_stripe_md **lsmp);
/* lov_ea.c */
struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
void lsm_free_plain(struct lov_stripe_md *lsm);
+void dump_lsm(unsigned int level, const struct lov_stripe_md *lsm);
-int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
- struct obdo *oa, void *data);
/* lproc_lov.c */
extern struct file_operations lov_proc_target_fops;
-#ifdef LPROCFS
-extern struct lprocfs_seq_vars lprocfs_lov_obd_vars[];
+#ifdef CONFIG_PROC_FS
+extern struct lprocfs_vars lprocfs_lov_obd_vars[];
#endif
/* lov_cl.c */
int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
void lov_dump_pool(int level, struct pool_desc *pool);
-struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
-int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
-void lov_pool_putref(struct pool_desc *pool);
static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm)
{
- LASSERT(cfs_atomic_read(&lsm->lsm_refc) > 0);
- cfs_atomic_inc(&lsm->lsm_refc);
+ LASSERT(atomic_read(&lsm->lsm_refc) > 0);
+ atomic_inc(&lsm->lsm_refc);
return lsm;
}
+static inline bool lov_oinfo_is_dummy(const struct lov_oinfo *loi)
+{
+ if (unlikely(loi->loi_oi.oi.oi_id == 0 &&
+ loi->loi_oi.oi.oi_seq == 0 &&
+ loi->loi_ost_idx == 0 &&
+ loi->loi_ost_gen == 0))
+ return true;
+
+ return false;
+}
+
+static inline struct obd_device *lov2obd(const struct lov_obd *lov)
+{
+ return container_of0(lov, struct obd_device, u.lov);
+}
+
#endif