static int lov_delete_raid0(const struct lu_env *env, struct lov_object *lov, union lov_layout_state *state) { struct lov_layout_raid0 *r0 = &state->raid0; struct lov_stripe_md *lsm = lov->lo_lsm; int i; dump_lsm(D_INODE, lsm); lov_layout_wait(env, lov); if (r0->lo_sub != NULL) { for (i = 0; i < r0->lo_nr; ++i) { struct lovsub_object *los = r0->lo_sub[i]; if (los != NULL) { cl_locks_prune(env, &los->lso_cl, 1); /* * If top-level object is to be evicted from * the cache, so are its sub-objects. */ lov_subobject_kill(env, lov, los, i); } } } cl_object_prune(env, &lov->lo_cl); return 0; }
static int lov_delete_empty(const struct lu_env *env, struct lov_object *lov, union lov_layout_state *state) { LASSERT(lov->lo_type == LLT_EMPTY || lov->lo_type == LLT_RELEASED); lov_layout_wait(env, lov); cl_object_prune(env, &lov->lo_cl); return 0; }
static int lov_layout_change(const struct lu_env *unused, struct lov_object *lov, const struct cl_object_conf *conf) { int result; enum lov_layout_type llt = LLT_EMPTY; union lov_layout_state *state = &lov->u; const struct lov_layout_operations *old_ops; const struct lov_layout_operations *new_ops; void *cookie; struct lu_env *env; int refcheck; LASSERT(0 <= lov->lo_type && lov->lo_type < ARRAY_SIZE(lov_dispatch)); if (conf->u.coc_md) llt = lov_type(conf->u.coc_md->lsm); LASSERT(0 <= llt && llt < ARRAY_SIZE(lov_dispatch)); cookie = cl_env_reenter(); env = cl_env_get(&refcheck); if (IS_ERR(env)) { cl_env_reexit(cookie); return PTR_ERR(env); } CDEBUG(D_INODE, DFID" from %s to %s\n", PFID(lu_object_fid(lov2lu(lov))), llt2str(lov->lo_type), llt2str(llt)); old_ops = &lov_dispatch[lov->lo_type]; new_ops = &lov_dispatch[llt]; result = cl_object_prune(env, &lov->lo_cl); if (result != 0) goto out; result = old_ops->llo_delete(env, lov, &lov->u); if (result == 0) { old_ops->llo_fini(env, lov, &lov->u); LASSERT(atomic_read(&lov->lo_active_ios) == 0); lov->lo_type = LLT_EMPTY; result = new_ops->llo_init(env, lu2lov_dev(lov->lo_cl.co_lu.lo_dev), lov, conf, state); if (result == 0) { new_ops->llo_install(env, lov, state); lov->lo_type = llt; } else { new_ops->llo_delete(env, lov, state); new_ops->llo_fini(env, lov, state); /* this file becomes an EMPTY file. */ } } out: cl_env_put(env, &refcheck); cl_env_reexit(cookie); return result; }
static int lov_layout_change(const struct lu_env *unused, struct lov_object *lov, struct lov_stripe_md *lsm, const struct cl_object_conf *conf) { enum lov_layout_type llt = lov_type(lsm); union lov_layout_state *state = &lov->u; const struct lov_layout_operations *old_ops; const struct lov_layout_operations *new_ops; void *cookie; struct lu_env *env; __u16 refcheck; int rc; ENTRY; LASSERT(0 <= lov->lo_type && lov->lo_type < ARRAY_SIZE(lov_dispatch)); cookie = cl_env_reenter(); env = cl_env_get(&refcheck); if (IS_ERR(env)) { cl_env_reexit(cookie); RETURN(PTR_ERR(env)); } LASSERT(0 <= llt && llt < ARRAY_SIZE(lov_dispatch)); CDEBUG(D_INODE, DFID" from %s to %s\n", PFID(lu_object_fid(lov2lu(lov))), llt2str(lov->lo_type), llt2str(llt)); old_ops = &lov_dispatch[lov->lo_type]; new_ops = &lov_dispatch[llt]; rc = cl_object_prune(env, &lov->lo_cl); if (rc != 0) GOTO(out, rc); rc = old_ops->llo_delete(env, lov, &lov->u); if (rc != 0) GOTO(out, rc); old_ops->llo_fini(env, lov, &lov->u); LASSERT(atomic_read(&lov->lo_active_ios) == 0); lov->lo_type = LLT_EMPTY; /* page bufsize fixup */ cl_object_header(&lov->lo_cl)->coh_page_bufsize -= lov_page_slice_fixup(lov, NULL); rc = new_ops->llo_init(env, lov_object_dev(lov), lov, lsm, conf, state); if (rc != 0) { new_ops->llo_delete(env, lov, state); new_ops->llo_fini(env, lov, state); /* this file becomes an EMPTY file. */ GOTO(out, rc); } new_ops->llo_install(env, lov, state); lov->lo_type = llt; out: cl_env_put(env, &refcheck); cl_env_reexit(cookie); RETURN(rc); }