void lu_object_add (struct lu_object *before, struct lu_object *o);
void lu_dev_add_linkage(struct lu_site *s, struct lu_device *d);
-void lu_dev_del_linkage(struct lu_site *s, struct lu_device *d);
/**
* Helpers to initialize and finalize device types.
}
void lu_object_put(const struct lu_env *env, struct lu_object *o);
-void lu_object_put_nocache(const struct lu_env *env, struct lu_object *o);
void lu_object_unhash(const struct lu_env *env, struct lu_object *o);
int lu_site_purge(const struct lu_env *env, struct lu_site *s, int nr);
void lu_context_key_revive_many (struct lu_context_key *k, ...);
void lu_context_key_quiesce_many (struct lu_context_key *k, ...);
-/*
- * update/clear ctx/ses tags.
- */
-void lu_context_tags_update(__u32 tags);
-void lu_context_tags_clear(__u32 tags);
-void lu_session_tags_update(__u32 tags);
-void lu_session_tags_clear(__u32 tags);
-
/**
* Environment.
*/
int lu_env_init (struct lu_env *env, __u32 tags);
void lu_env_fini (struct lu_env *env);
int lu_env_refill(struct lu_env *env);
-int lu_env_refill_by_tags(struct lu_env *env, __u32 ctags, __u32 stags);
/** @} lu_context */
int lu_kmem_init(struct lu_kmem_descr *caches);
void lu_kmem_fini(struct lu_kmem_descr *caches);
-void lu_object_assign_fid(const struct lu_env *env, struct lu_object *o,
- const struct lu_fid *fid);
-struct lu_object *lu_object_anon(const struct lu_env *env,
- struct lu_device *dev,
- const struct lu_object_conf *conf);
-
-/** null buffer */
-extern struct lu_buf LU_BUF_NULL;
-
-void lu_buf_free(struct lu_buf *buf);
-void lu_buf_alloc(struct lu_buf *buf, int size);
-void lu_buf_realloc(struct lu_buf *buf, int size);
-
-int lu_buf_check_and_grow(struct lu_buf *buf, int len);
-struct lu_buf *lu_buf_check_and_alloc(struct lu_buf *buf, int len);
-
/** @} lu */
#endif /* __LUSTRE_LU_OBJECT_H */
}
EXPORT_SYMBOL(lu_object_put);
-/**
- * Put object and don't keep in cache. This is temporary solution for
- * multi-site objects when its layering is not constant.
- */
-void lu_object_put_nocache(const struct lu_env *env, struct lu_object *o)
-{
- set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
- return lu_object_put(env, o);
-}
-EXPORT_SYMBOL(lu_object_put_nocache);
-
/**
* Kill the object and take it out of LRU cache.
* Currently used by client code for layout change.
}
EXPORT_SYMBOL(lu_object_print);
-/**
- * Check object consistency.
- */
-int lu_object_invariant(const struct lu_object *o)
-{
- struct lu_object_header *top;
-
- top = o->lo_header;
- list_for_each_entry(o, &top->loh_layers, lo_linkage) {
- if (o->lo_ops->loo_object_invariant != NULL &&
- !o->lo_ops->loo_object_invariant(o))
- return 0;
- }
- return 1;
-}
-EXPORT_SYMBOL(lu_object_invariant);
-
static struct lu_object *htable_lookup(struct lu_site *s,
struct cfs_hash_bd *bd,
const struct lu_fid *f,
}
EXPORT_SYMBOL(lu_dev_add_linkage);
-void lu_dev_del_linkage(struct lu_site *s, struct lu_device *d)
-{
- spin_lock(&s->ls_ld_lock);
- list_del_init(&d->ld_linkage);
- spin_unlock(&s->ls_ld_lock);
-}
-EXPORT_SYMBOL(lu_dev_del_linkage);
-
/**
* Initialize site \a s, with \a d as the top level device.
*/
__u32 lu_context_tags_default;
__u32 lu_session_tags_default;
-void lu_context_tags_update(__u32 tags)
-{
- spin_lock(&lu_keys_guard);
- lu_context_tags_default |= tags;
- key_set_version++;
- spin_unlock(&lu_keys_guard);
-}
-EXPORT_SYMBOL(lu_context_tags_update);
-
-void lu_context_tags_clear(__u32 tags)
-{
- spin_lock(&lu_keys_guard);
- lu_context_tags_default &= ~tags;
- key_set_version++;
- spin_unlock(&lu_keys_guard);
-}
-EXPORT_SYMBOL(lu_context_tags_clear);
-
-void lu_session_tags_update(__u32 tags)
-{
- spin_lock(&lu_keys_guard);
- lu_session_tags_default |= tags;
- key_set_version++;
- spin_unlock(&lu_keys_guard);
-}
-EXPORT_SYMBOL(lu_session_tags_update);
-
-void lu_session_tags_clear(__u32 tags)
-{
- spin_lock(&lu_keys_guard);
- lu_session_tags_default &= ~tags;
- key_set_version++;
- spin_unlock(&lu_keys_guard);
-}
-EXPORT_SYMBOL(lu_session_tags_clear);
-
int lu_env_init(struct lu_env *env, __u32 tags)
{
int result;
}
EXPORT_SYMBOL(lu_env_refill);
-/**
- * Currently, this API will only be used by echo client.
- * Because echo client and normal lustre client will share
- * same cl_env cache. So echo client needs to refresh
- * the env context after it get one from the cache, especially
- * when normal client and echo client co-exist in the same client.
- */
-int lu_env_refill_by_tags(struct lu_env *env, __u32 ctags,
- __u32 stags)
-{
- if ((env->le_ctx.lc_tags & ctags) != ctags) {
- env->le_ctx.lc_version = 0;
- env->le_ctx.lc_tags |= ctags;
- }
-
- if (env->le_ses && (env->le_ses->lc_tags & stags) != stags) {
- env->le_ses->lc_version = 0;
- env->le_ses->lc_tags |= stags;
- }
-
- return lu_env_refill(env);
-}
-EXPORT_SYMBOL(lu_env_refill_by_tags);
-
-
struct lu_site_stats {
unsigned lss_populated;
unsigned lss_max_search;
return sc->nr_to_scan - remain;
}
-/*
- * Debugging stuff.
- */
-
-/**
- * Environment to be used in debugger, contains all tags.
- */
-struct lu_env lu_debugging_env;
-
/**
* Debugging printer function using printk().
*/
-int lu_printk_printer(const struct lu_env *env,
- void *unused, const char *format, ...)
-{
- va_list args;
-
- va_start(args, format);
- vprintk(format, args);
- va_end(args);
- return 0;
-}
-
static struct shrinker lu_site_shrinker = {
.count_objects = lu_cache_shrink_count,
.scan_objects = lu_cache_shrink_scan,
}
}
EXPORT_SYMBOL(lu_kmem_fini);
-
-/**
- * Temporary solution to be able to assign fid in ->do_create()
- * till we have fully-functional OST fids
- */
-void lu_object_assign_fid(const struct lu_env *env, struct lu_object *o,
- const struct lu_fid *fid)
-{
- struct lu_site *s = o->lo_dev->ld_site;
- struct lu_fid *old = &o->lo_header->loh_fid;
- struct lu_object *shadow;
- wait_queue_t waiter;
- struct cfs_hash *hs;
- struct cfs_hash_bd bd;
- __u64 version = 0;
-
- LASSERT(fid_is_zero(old));
-
- hs = s->ls_obj_hash;
- cfs_hash_bd_get_and_lock(hs, (void *)fid, &bd, 1);
- shadow = htable_lookup(s, &bd, fid, &waiter, &version);
- /* supposed to be unique */
- LASSERT(IS_ERR(shadow) && PTR_ERR(shadow) == -ENOENT);
- *old = *fid;
- cfs_hash_bd_add_locked(hs, &bd, &o->lo_header->loh_hash);
- cfs_hash_bd_unlock(hs, &bd, 1);
-}
-EXPORT_SYMBOL(lu_object_assign_fid);
-
-/**
- * allocates object with 0 (non-assigned) fid
- * XXX: temporary solution to be able to assign fid in ->do_create()
- * till we have fully-functional OST fids
- */
-struct lu_object *lu_object_anon(const struct lu_env *env,
- struct lu_device *dev,
- const struct lu_object_conf *conf)
-{
- struct lu_fid fid;
- struct lu_object *o;
-
- fid_zero(&fid);
- o = lu_object_alloc(env, dev, &fid, conf);
-
- return o;
-}
-EXPORT_SYMBOL(lu_object_anon);
-
-struct lu_buf LU_BUF_NULL = {
- .lb_buf = NULL,
- .lb_len = 0
-};
-EXPORT_SYMBOL(LU_BUF_NULL);
-
-void lu_buf_free(struct lu_buf *buf)
-{
- LASSERT(buf);
- if (buf->lb_buf) {
- LASSERT(buf->lb_len > 0);
- kvfree(buf->lb_buf);
- buf->lb_buf = NULL;
- buf->lb_len = 0;
- }
-}
-EXPORT_SYMBOL(lu_buf_free);
-
-void lu_buf_alloc(struct lu_buf *buf, int size)
-{
- LASSERT(buf);
- LASSERT(buf->lb_buf == NULL);
- LASSERT(buf->lb_len == 0);
- buf->lb_buf = libcfs_kvzalloc(size, GFP_NOFS);
- if (likely(buf->lb_buf))
- buf->lb_len = size;
-}
-EXPORT_SYMBOL(lu_buf_alloc);
-
-void lu_buf_realloc(struct lu_buf *buf, int size)
-{
- lu_buf_free(buf);
- lu_buf_alloc(buf, size);
-}
-EXPORT_SYMBOL(lu_buf_realloc);
-
-struct lu_buf *lu_buf_check_and_alloc(struct lu_buf *buf, int len)
-{
- if (buf->lb_buf == NULL && buf->lb_len == 0)
- lu_buf_alloc(buf, len);
-
- if ((len > buf->lb_len) && (buf->lb_buf != NULL))
- lu_buf_realloc(buf, len);
-
- return buf;
-}
-EXPORT_SYMBOL(lu_buf_check_and_alloc);
-
-/**
- * Increase the size of the \a buf.
- * preserves old data in buffer
- * old buffer remains unchanged on error
- * \retval 0 or -ENOMEM
- */
-int lu_buf_check_and_grow(struct lu_buf *buf, int len)
-{
- char *ptr;
-
- if (len <= buf->lb_len)
- return 0;
-
- ptr = libcfs_kvzalloc(len, GFP_NOFS);
- if (ptr == NULL)
- return -ENOMEM;
-
- /* Free the old buf */
- if (buf->lb_buf != NULL) {
- memcpy(ptr, buf->lb_buf, buf->lb_len);
- kvfree(buf->lb_buf);
- }
-
- buf->lb_buf = ptr;
- buf->lb_len = len;
- return 0;
-}
-EXPORT_SYMBOL(lu_buf_check_and_grow);
projects / openwrt / staging / blogic.git / commitdiff