#include <lprocfs_status.h>
#include "lmv_internal.h"
-/* objects cache. */
-extern cfs_mem_cache_t *obj_cache;
-extern atomic_t obj_cache_count;
+extern cfs_mem_cache_t *lmv_object_cache;
+extern atomic_t lmv_object_count;
-/* object list and its guard. */
static CFS_LIST_HEAD(obj_list);
static spinlock_t obj_list_lock = SPIN_LOCK_UNLOCKED;
-/* creates new obj on passed @fid and @mea. */
-struct lmv_obj *
-lmv_obj_alloc(struct obd_device *obd,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea)
+struct lmv_object *lmv_object_alloc(struct obd_device *obd,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea)
{
- int i;
- struct lmv_obj *obj;
- unsigned int obj_size;
- struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ unsigned int obj_size;
+ struct lmv_object *obj;
+ int i;
LASSERT(mea->mea_magic == MEA_MAGIC_LAST_CHAR
|| mea->mea_magic == MEA_MAGIC_ALL_CHARS
|| mea->mea_magic == MEA_MAGIC_HASH_SEGMENT);
- OBD_SLAB_ALLOC(obj, obj_cache, CFS_ALLOC_STD,
+ OBD_SLAB_ALLOC(obj, lmv_object_cache, CFS_ALLOC_STD,
sizeof(*obj));
if (!obj)
return NULL;
- atomic_inc(&obj_cache_count);
+ atomic_inc(&lmv_object_count);
obj->lo_fid = *fid;
obj->lo_obd = obd;
atomic_set(&obj->lo_count, 0);
obj->lo_objcount = mea->mea_count;
- obj_size = sizeof(struct lmv_inode) *
+ obj_size = sizeof(struct lmv_stripe) *
lmv->desc.ld_tgt_count;
- OBD_ALLOC(obj->lo_inodes, obj_size);
- if (!obj->lo_inodes)
+ OBD_ALLOC(obj->lo_stripes, obj_size);
+ if (!obj->lo_stripes)
goto err_obj;
- memset(obj->lo_inodes, 0, obj_size);
+ memset(obj->lo_stripes, 0, obj_size);
- /* put all ids in */
+ CDEBUG(D_INODE, "Allocate object for "DFID"\n",
+ PFID(fid));
for (i = 0; i < mea->mea_count; i++) {
int rc;
- CDEBUG(D_OTHER, "subobj "DFID"\n",
+ CDEBUG(D_INODE, "Process subobject "DFID"\n",
PFID(&mea->mea_ids[i]));
- obj->lo_inodes[i].li_fid = mea->mea_ids[i];
- LASSERT(fid_is_sane(&obj->lo_inodes[i].li_fid));
+ obj->lo_stripes[i].ls_fid = mea->mea_ids[i];
+ LASSERT(fid_is_sane(&obj->lo_stripes[i].ls_fid));
/*
* Cache slave mds number to use it in all cases it is needed
* instead of constant lookup.
*/
- rc = lmv_fld_lookup(lmv, &obj->lo_inodes[i].li_fid,
- &obj->lo_inodes[i].li_mds);
+ rc = lmv_fld_lookup(lmv, &obj->lo_stripes[i].ls_fid,
+ &obj->lo_stripes[i].ls_mds);
if (rc)
goto err_obj;
}
return obj;
-
err_obj:
OBD_FREE(obj, sizeof(*obj));
return NULL;
}
-/* destroy passed @obj. */
-void
-lmv_obj_free(struct lmv_obj *obj)
+void lmv_object_free(struct lmv_object *obj)
{
- struct lmv_obd *lmv = &obj->lo_obd->u.lmv;
- unsigned int obj_size;
+ struct lmv_obd *lmv = &obj->lo_obd->u.lmv;
+ unsigned int obj_size;
LASSERT(!atomic_read(&obj->lo_count));
- obj_size = sizeof(struct lmv_inode) *
+ obj_size = sizeof(struct lmv_stripe) *
lmv->desc.ld_tgt_count;
- OBD_FREE(obj->lo_inodes, obj_size);
- OBD_SLAB_FREE(obj, obj_cache, sizeof(*obj));
- atomic_dec(&obj_cache_count);
+ OBD_FREE(obj->lo_stripes, obj_size);
+ OBD_SLAB_FREE(obj, lmv_object_cache, sizeof(*obj));
+ atomic_dec(&lmv_object_count);
}
-static void
-__lmv_obj_add(struct lmv_obj *obj)
+static void __lmv_object_add(struct lmv_object *obj)
{
atomic_inc(&obj->lo_count);
list_add(&obj->lo_list, &obj_list);
}
-void
-lmv_obj_add(struct lmv_obj *obj)
+void lmv_object_add(struct lmv_object *obj)
{
spin_lock(&obj_list_lock);
- __lmv_obj_add(obj);
+ __lmv_object_add(obj);
spin_unlock(&obj_list_lock);
}
-static void
-__lmv_obj_del(struct lmv_obj *obj)
+static void __lmv_object_del(struct lmv_object *obj)
{
list_del(&obj->lo_list);
- lmv_obj_free(obj);
+ lmv_object_free(obj);
}
-void
-lmv_obj_del(struct lmv_obj *obj)
+void lmv_object_del(struct lmv_object *obj)
{
spin_lock(&obj_list_lock);
- __lmv_obj_del(obj);
+ __lmv_object_del(obj);
spin_unlock(&obj_list_lock);
}
-static struct lmv_obj *
-__lmv_obj_get(struct lmv_obj *obj)
+static struct lmv_object *__lmv_object_get(struct lmv_object *obj)
{
LASSERT(obj != NULL);
atomic_inc(&obj->lo_count);
return obj;
}
-struct lmv_obj *
-lmv_obj_get(struct lmv_obj *obj)
+struct lmv_object *lmv_object_get(struct lmv_object *obj)
{
spin_lock(&obj_list_lock);
- __lmv_obj_get(obj);
+ __lmv_object_get(obj);
spin_unlock(&obj_list_lock);
return obj;
}
-static void
-__lmv_obj_put(struct lmv_obj *obj)
+static void __lmv_object_put(struct lmv_object *obj)
{
LASSERT(obj);
if (atomic_dec_and_test(&obj->lo_count)) {
- CDEBUG(D_OTHER, "last reference to "DFID" - "
+ CDEBUG(D_INODE, "Last reference to "DFID" - "
"destroying\n", PFID(&obj->lo_fid));
- __lmv_obj_del(obj);
+ __lmv_object_del(obj);
}
}
-void
-lmv_obj_put(struct lmv_obj *obj)
+void lmv_object_put(struct lmv_object *obj)
{
spin_lock(&obj_list_lock);
- __lmv_obj_put(obj);
+ __lmv_object_put(obj);
spin_unlock(&obj_list_lock);
}
-static struct lmv_obj *
-__lmv_obj_grab(struct obd_device *obd, const struct lu_fid *fid)
+void lmv_object_put_unlock(struct lmv_object *obj)
+{
+ lmv_object_unlock(obj);
+ lmv_object_put(obj);
+}
+
+static struct lmv_object *__lmv_object_find(struct obd_device *obd, const struct lu_fid *fid)
{
- struct lmv_obj *obj;
- struct list_head *cur;
+ struct lmv_object *obj;
+ struct list_head *cur;
list_for_each(cur, &obj_list) {
- obj = list_entry(cur, struct lmv_obj, lo_list);
+ obj = list_entry(cur, struct lmv_object, lo_list);
- /* check if object is in progress of destroying. If so - skip
- * it. */
+ /*
+ * Check if object is in destroying phase. If so - skip
+ * it.
+ */
if (obj->lo_state & O_FREEING)
continue;
/*
- * we should make sure, that we have found object belong to
+ * We should make sure, that we have found object belong to
* passed obd. It is possible that, object manager will have two
* objects with the same fid belong to different obds, if client
* and mds runs on the same host. May be it is good idea to have
if (obj->lo_obd != obd)
continue;
- /* check if this is what we're looking for. */
+ /*
+ * Check if this is what we're looking for.
+ */
if (lu_fid_eq(&obj->lo_fid, fid))
- return __lmv_obj_get(obj);
+ return __lmv_object_get(obj);
}
return NULL;
}
-struct lmv_obj *
-lmv_obj_grab(struct obd_device *obd, const struct lu_fid *fid)
+struct lmv_object *lmv_object_find(struct obd_device *obd,
+ const struct lu_fid *fid)
{
- struct lmv_obj *obj;
+ struct lmv_object *obj;
ENTRY;
spin_lock(&obj_list_lock);
- obj = __lmv_obj_grab(obd, fid);
+ obj = __lmv_object_find(obd, fid);
spin_unlock(&obj_list_lock);
RETURN(obj);
}
-/* looks in objects list for an object that matches passed @fid. If it is not
- * found -- creates it using passed @mea and puts onto list. */
-static struct lmv_obj *
-__lmv_obj_create(struct obd_device *obd, const struct lu_fid *fid,
- struct lmv_stripe_md *mea)
+struct lmv_object *lmv_object_find_lock(struct obd_device *obd,
+ const struct lu_fid *fid)
{
- struct lmv_obj *new, *obj;
+ struct lmv_object *obj;
ENTRY;
- obj = lmv_obj_grab(obd, fid);
+ obj = lmv_object_find(obd, fid);
+ if (obj)
+ lmv_object_lock(obj);
+
+ RETURN(obj);
+}
+
+static struct lmv_object *__lmv_object_create(struct obd_device *obd,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea)
+{
+ struct lmv_object *new;
+ struct lmv_object *obj;
+ ENTRY;
+
+ obj = lmv_object_find(obd, fid);
if (obj)
RETURN(obj);
- /* no such object yet, allocate and initialize it. */
- new = lmv_obj_alloc(obd, fid, mea);
+ new = lmv_object_alloc(obd, fid, mea);
if (!new)
RETURN(NULL);
- /* check if someone create it already while we were dealing with
- * allocating @obj. */
+ /*
+ * Check if someone created it already while we were dealing with
+ * allocating @obj.
+ */
spin_lock(&obj_list_lock);
- obj = __lmv_obj_grab(obd, fid);
+ obj = __lmv_object_find(obd, fid);
if (obj) {
- /* someone created it already - put @obj and getting out. */
+ /*
+ * Someone created it already - put @obj and getting out.
+ */
spin_unlock(&obj_list_lock);
- lmv_obj_free(new);
+ lmv_object_free(new);
RETURN(obj);
}
- __lmv_obj_add(new);
- __lmv_obj_get(new);
+ __lmv_object_add(new);
+ __lmv_object_get(new);
spin_unlock(&obj_list_lock);
- CDEBUG(D_OTHER, "new obj in lmv cache: "DFID"\n",
+ CDEBUG(D_INODE, "New obj in lmv cache: "DFID"\n",
PFID(fid));
RETURN(new);
-
}
-/* creates object from passed @fid and @mea. If @mea is NULL, it will be
- * obtained from correct MDT and used for constructing the object. */
-struct lmv_obj *
-lmv_obj_create(struct obd_export *exp, const struct lu_fid *fid,
- struct lmv_stripe_md *mea)
+struct lmv_object *lmv_object_create(struct obd_export *exp,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct ptlrpc_request *req = NULL;
- struct obd_export *tgt_exp;
- struct lmv_obj *obj;
- struct lustre_md md;
- int mealen, rc;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct ptlrpc_request *req = NULL;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ struct lustre_md md;
+ int mealen;
+ int rc;
ENTRY;
- CDEBUG(D_OTHER, "get mea for "DFID" and create lmv obj\n",
+ CDEBUG(D_INODE, "Get mea for "DFID" and create lmv obj\n",
PFID(fid));
md.mea = NULL;
if (mea == NULL) {
__u64 valid;
- CDEBUG(D_OTHER, "mea isn't passed in, get it now\n");
+ CDEBUG(D_INODE, "Mea isn't passed in, get it now\n");
mealen = lmv_get_easize(lmv);
- /* time to update mea of parent fid */
+ /*
+ * Time to update mea of parent fid.
+ */
md.mea = NULL;
valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA;
- tgt_exp = lmv_find_export(lmv, fid);
- if (IS_ERR(tgt_exp))
- GOTO(cleanup, obj = (void *)tgt_exp);
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ GOTO(cleanup, obj = (void *)tgt);
- rc = md_getattr(tgt_exp, fid, NULL, valid, mealen, &req);
+ rc = md_getattr(tgt->ltd_exp, fid, NULL, valid, mealen, &req);
if (rc) {
CERROR("md_getattr() failed, error %d\n", rc);
GOTO(cleanup, obj = ERR_PTR(rc));
rc = md_get_lustre_md(exp, req, NULL, exp, &md);
if (rc) {
- CERROR("mdc_get_lustre_md() failed, error %d\n", rc);
+ CERROR("md_get_lustre_md() failed, error %d\n", rc);
GOTO(cleanup, obj = ERR_PTR(rc));
}
mea = md.mea;
}
- /* got mea, now create obj for it. */
- obj = __lmv_obj_create(obd, fid, mea);
+ /*
+ * Got mea, now create obj for it.
+ */
+ obj = __lmv_object_create(obd, fid, mea);
if (!obj) {
CERROR("Can't create new object "DFID"\n",
PFID(fid));
GOTO(cleanup, obj = ERR_PTR(-ENOMEM));
}
- /* XXX LOV STACKING */
if (md.mea != NULL)
obd_free_memmd(exp, (void *)&md.mea);
return obj;
}
-/*
- * looks for object with @fid and orders to destroy it. It is possible the object
- * will not be destroyed right now, because it is still using by someone. In
- * this case it will be marked as "freeing" and will not be accessible anymore
- * for subsequent callers of lmv_obj_grab().
- */
-int
-lmv_obj_delete(struct obd_export *exp, const struct lu_fid *fid)
+int lmv_object_delete(struct obd_export *exp, const struct lu_fid *fid)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obj *obj;
- int rc = 0;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_object *obj;
+ int rc = 0;
ENTRY;
spin_lock(&obj_list_lock);
- obj = __lmv_obj_grab(obd, fid);
+ obj = __lmv_object_find(obd, fid);
if (obj) {
obj->lo_state |= O_FREEING;
- __lmv_obj_put(obj);
- __lmv_obj_put(obj);
+ __lmv_object_put(obj);
+ __lmv_object_put(obj);
rc = 1;
}
spin_unlock(&obj_list_lock);
-
RETURN(rc);
}
-int
-lmv_obj_setup(struct obd_device *obd)
+int lmv_object_setup(struct obd_device *obd)
{
ENTRY;
LASSERT(obd != NULL);
RETURN(0);
}
-void
-lmv_obj_cleanup(struct obd_device *obd)
+void lmv_object_cleanup(struct obd_device *obd)
{
- struct list_head *cur, *tmp;
- struct lmv_obj *obj;
+ struct list_head *cur;
+ struct list_head *tmp;
+ struct lmv_object *obj;
ENTRY;
CDEBUG(D_INFO, "LMV object manager cleanup (%s)\n",
spin_lock(&obj_list_lock);
list_for_each_safe(cur, tmp, &obj_list) {
- obj = list_entry(cur, struct lmv_obj, lo_list);
+ obj = list_entry(cur, struct lmv_object, lo_list);
if (obj->lo_obd != obd)
continue;
obj->lo_state |= O_FREEING;
if (atomic_read(&obj->lo_count) > 1) {
- CERROR("obj "DFID" has count > 1 (%d)\n",
+ CERROR("Object "DFID" has count (%d)\n",
PFID(&obj->lo_fid), atomic_read(&obj->lo_count));
}
- __lmv_obj_put(obj);
+ __lmv_object_put(obj);
}
spin_unlock(&obj_list_lock);
EXIT;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff