spinlock_t lsm_lock;
pid_t lsm_lock_owner; /* debugging */
- /* maximum possible file size, might change as OSTs status changes,
- * e.g. disconnected, deactivated */
- loff_t lsm_maxbytes;
+ union {
+ /* maximum possible file size, might change as OSTs status
+ * changes, e.g. disconnected, deactivated
+ */
+ loff_t lsm_maxbytes;
+ /* size of full foreign LOV */
+ size_t lsm_foreign_size;
+ };
struct ost_id lsm_oi;
u32 lsm_magic;
u32 lsm_layout_gen;
struct lov_stripe_md_entry *lsm_entries[];
};
+#define lsm_foreign(lsm) (lsm->lsm_entries[0])
+
static inline bool lsme_inited(const struct lov_stripe_md_entry *lsme)
{
return lsme->lsme_flags & LCME_FL_INIT;
return lov_mds_md_size(lsm->lsm_entries[0]->lsme_stripe_count,
lsm->lsm_entries[0]->lsme_magic);
+ if (lsm->lsm_magic == LOV_MAGIC_FOREIGN)
+ return lsm->lsm_foreign_size;
+
LASSERT(lsm->lsm_magic == LOV_MAGIC_COMP_V1);
size = sizeof(struct lov_comp_md_v1);
stripe_count = 0;
size += sizeof(*lsme);
- size += lov_mds_md_size(lsme->lsme_stripe_count,
+ size += lov_mds_md_size(stripe_count,
lsme->lsme_magic);
}
extern const struct lsm_operations lsm_v1_ops;
extern const struct lsm_operations lsm_v3_ops;
extern const struct lsm_operations lsm_comp_md_v1_ops;
+extern const struct lsm_operations lsm_foreign_ops;
static inline const struct lsm_operations *lsm_op_find(int magic)
{
switch (magic) {
return &lsm_v3_ops;
case LOV_MAGIC_COMP_V1:
return &lsm_comp_md_v1_ops;
+ case LOV_MAGIC_FOREIGN:
+ return &lsm_foreign_ops;
default:
CERROR("unrecognized lsm_magic %08x\n", magic);
return NULL;
})
#elif BITS_PER_LONG == 32
# define lov_do_div64(n, base) ({ \
+ uint64_t __num = (n); \
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); \
+ int __remainder; \
+ LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), \
+ "64 bit lov division %llu / %llu\n", \
+ __num, (uint64_t)(base)); \
+ __remainder = __num & (LOV_MIN_STRIPE_SIZE - 1); \
+ __num >>= LOV_MIN_STRIPE_BITS; \
+ __rem = do_div(__num, (base) >> LOV_MIN_STRIPE_BITS); \
__rem <<= LOV_MIN_STRIPE_BITS; \
__rem += __remainder; \
} else { \
- __rem = do_div(n, base); \
+ __rem = do_div(__num, base); \
} \
+ (n) = __num; \
__rem; \
})
#endif
struct pool_desc {
char pool_name[LOV_MAXPOOLNAME + 1];
- struct ost_pool pool_obds;
+ struct lu_tgt_pool pool_obds;
atomic_t pool_refcount;
- struct hlist_node pool_hash; /* access by poolname */
+ struct rhash_head pool_hash; /* access by poolname */
struct list_head pool_list; /* serial access */
+ struct rcu_head pool_rcu;
struct proc_dir_entry *pool_proc_entry;
struct obd_device *pool_lobd; /* owner */
};
+int lov_pool_hash_init(struct rhashtable *tbl);
+void lov_pool_hash_destroy(struct rhashtable *tbl);
+
struct lov_request {
struct obd_info rq_oi;
struct lov_request_set *rq_rqset;
struct ost_lvb *lvb, __u64 *kms_place);
/* lov_offset.c */
+loff_t stripe_width(struct lov_stripe_md *lsm, unsigned int index);
u64 lov_stripe_size(struct lov_stripe_md *lsm, int index,
u64 ost_size, int stripeno);
int lov_stripe_offset(struct lov_stripe_md *lsm, int index, loff_t lov_off,
int lov_free_memmd(struct lov_stripe_md **lsmp);
void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
-void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
void lov_dump_lmm_common(int level, void *lmmp);
-void lov_dump_lmm(int level, void *lmm);
/* lov_ea.c */
void lsm_free_plain(struct lov_stripe_md *lsm);
#define LOV_MDC_TGT_MAX 256
-/* pools */
-extern struct cfs_hash_ops pool_hash_operations;
-/* ost_pool methods */
-int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
-int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
-int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
-int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
-int lov_ost_pool_free(struct ost_pool *op);
+/* lu_tgt_pool methods */
+int lov_ost_pool_init(struct lu_tgt_pool *op, unsigned int count);
+int lov_ost_pool_extend(struct lu_tgt_pool *op, unsigned int min_count);
+int lov_ost_pool_add(struct lu_tgt_pool *op, __u32 idx, unsigned int min_count);
+int lov_ost_pool_remove(struct lu_tgt_pool *op, __u32 idx);
+int lov_ost_pool_free(struct lu_tgt_pool *op);
/* high level pool methods */
int lov_pool_new(struct obd_device *obd, char *poolname);
static inline struct obd_device *lov2obd(const struct lov_obd *lov)
{
- return container_of0(lov, struct obd_device, u.lov);
+ return container_of_safe(lov, struct obd_device, u.lov);
}
static inline void lov_lsm2layout(struct lov_stripe_md *lsm,
ol->ol_comp_id = 0;
}
}
+
+struct pool_desc *lov_pool_find(struct obd_device *obd, char *poolname);
+void lov_pool_putref(struct pool_desc *pool);
#endif