diff --git a/models/admin/main_test.go b/models/admin/main_test.go
new file mode 100644
index 0000000000..f6c9dce57a
--- /dev/null
+++ b/models/admin/main_test.go
@@ -0,0 +1,18 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package admin
+
+import (
+	"path/filepath"
+	"testing"
+
+	"code.gitea.io/gitea/models/unittest"
+)
+
+func TestMain(m *testing.M) {
+	unittest.MainTest(m, filepath.Join("..", ".."),
+		"notice.yml",
+	)
+}
diff --git a/models/admin.go b/models/admin/notice.go
similarity index 74%
rename from models/admin.go
rename to models/admin/notice.go
index a003aff7e6..c41e49ed8c 100644
--- a/models/admin.go
+++ b/models/admin/notice.go
@@ -1,11 +1,11 @@
-// Copyright 2014 The Gogs Authors. All rights reserved.
-// Copyright 2020 The Gitea Authors. All rights reserved.
+// Copyright 2021 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
-package models
+package admin
 
 import (
+	"context"
 	"fmt"
 
 	"code.gitea.io/gitea/models/db"
@@ -44,10 +44,11 @@ func (n *Notice) TrStr() string {
 
 // CreateNotice creates new system notice.
 func CreateNotice(tp NoticeType, desc string, args ...interface{}) error {
-	return createNotice(db.GetEngine(db.DefaultContext), tp, desc, args...)
+	return CreateNoticeCtx(db.DefaultContext, tp, desc, args...)
 }
 
-func createNotice(e db.Engine, tp NoticeType, desc string, args ...interface{}) error {
+// CreateNoticeCtx creates new system notice.
+func CreateNoticeCtx(ctx context.Context, tp NoticeType, desc string, args ...interface{}) error {
 	if len(args) > 0 {
 		desc = fmt.Sprintf(desc, args...)
 	}
@@ -55,42 +56,43 @@ func createNotice(e db.Engine, tp NoticeType, desc string, args ...interface{})
 		Type:        tp,
 		Description: desc,
 	}
-	_, err := e.Insert(n)
-	return err
+	return db.Insert(ctx, n)
 }
 
 // CreateRepositoryNotice creates new system notice with type NoticeRepository.
 func CreateRepositoryNotice(desc string, args ...interface{}) error {
-	return createNotice(db.GetEngine(db.DefaultContext), NoticeRepository, desc, args...)
+	return CreateNoticeCtx(db.DefaultContext, NoticeRepository, desc, args...)
 }
 
 // RemoveAllWithNotice removes all directories in given path and
 // creates a system notice when error occurs.
 func RemoveAllWithNotice(title, path string) {
-	removeAllWithNotice(db.GetEngine(db.DefaultContext), title, path)
+	RemoveAllWithNoticeCtx(db.DefaultContext, title, path)
 }
 
 // RemoveStorageWithNotice removes a file from the storage and
 // creates a system notice when error occurs.
 func RemoveStorageWithNotice(bucket storage.ObjectStorage, title, path string) {
-	removeStorageWithNotice(db.GetEngine(db.DefaultContext), bucket, title, path)
+	removeStorageWithNotice(db.DefaultContext, bucket, title, path)
 }
 
-func removeStorageWithNotice(e db.Engine, bucket storage.ObjectStorage, title, path string) {
+func removeStorageWithNotice(ctx context.Context, bucket storage.ObjectStorage, title, path string) {
 	if err := bucket.Delete(path); err != nil {
 		desc := fmt.Sprintf("%s [%s]: %v", title, path, err)
 		log.Warn(title+" [%s]: %v", path, err)
-		if err = createNotice(e, NoticeRepository, desc); err != nil {
+		if err = CreateNoticeCtx(ctx, NoticeRepository, desc); err != nil {
 			log.Error("CreateRepositoryNotice: %v", err)
 		}
 	}
 }
 
-func removeAllWithNotice(e db.Engine, title, path string) {
+// RemoveAllWithNoticeCtx removes all directories in given path and
+// creates a system notice when error occurs.
+func RemoveAllWithNoticeCtx(ctx context.Context, title, path string) {
 	if err := util.RemoveAll(path); err != nil {
 		desc := fmt.Sprintf("%s [%s]: %v", title, path, err)
 		log.Warn(title+" [%s]: %v", path, err)
-		if err = createNotice(e, NoticeRepository, desc); err != nil {
+		if err = CreateNoticeCtx(ctx, NoticeRepository, desc); err != nil {
 			log.Error("CreateRepositoryNotice: %v", err)
 		}
 	}
@@ -142,16 +144,3 @@ func DeleteNoticesByIDs(ids []int64) error {
 		Delete(new(Notice))
 	return err
 }
-
-// GetAdminUser returns the first administrator
-func GetAdminUser() (*User, error) {
-	var admin User
-	has, err := db.GetEngine(db.DefaultContext).Where("is_admin=?", true).Get(&admin)
-	if err != nil {
-		return nil, err
-	} else if !has {
-		return nil, ErrUserNotExist{}
-	}
-
-	return &admin, nil
-}
diff --git a/models/admin_test.go b/models/admin/notice_test.go
similarity index 99%
rename from models/admin_test.go
rename to models/admin/notice_test.go
index 8c1deda5f8..7272df4368 100644
--- a/models/admin_test.go
+++ b/models/admin/notice_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
-package models
+package admin
 
 import (
 	"testing"
diff --git a/models/consistency.go b/models/consistency.go
index d7bf8ade57..83cfbd0e49 100644
--- a/models/consistency.go
+++ b/models/consistency.go
@@ -5,6 +5,7 @@
 package models
 
 import (
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 
 	"xorm.io/builder"
@@ -127,7 +128,7 @@ func DeleteOrphanedIssues() error {
 
 	// Remove issue attachment files.
 	for i := range attachmentPaths {
-		removeAllWithNotice(db.GetEngine(db.DefaultContext), "Delete issue attachment", attachmentPaths[i])
+		admin_model.RemoveAllWithNoticeCtx(db.DefaultContext, "Delete issue attachment", attachmentPaths[i])
 	}
 	return nil
 }
diff --git a/models/repo.go b/models/repo.go
index d45f1b2fc3..57806a86f7 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -23,6 +23,7 @@ import (
 
 	_ "image/jpeg" // Needed for jpeg support
 
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/models/webhook"
@@ -133,7 +134,7 @@ func NewRepoContext() {
 	loadRepoConfig()
 	unit.LoadUnitConfig()
 
-	RemoveAllWithNotice("Clean up repository temporary data", filepath.Join(setting.AppDataPath, "tmp"))
+	admin_model.RemoveAllWithNotice("Clean up repository temporary data", filepath.Join(setting.AppDataPath, "tmp"))
 }
 
 // RepositoryStatus defines the status of repository
@@ -1648,36 +1649,36 @@ func DeleteRepository(doer *User, uid, repoID int64) error {
 
 	// Remove repository files.
 	repoPath := repo.RepoPath()
-	removeAllWithNotice(db.GetEngine(db.DefaultContext), "Delete repository files", repoPath)
+	admin_model.RemoveAllWithNotice("Delete repository files", repoPath)
 
 	// Remove wiki files
 	if repo.HasWiki() {
-		removeAllWithNotice(db.GetEngine(db.DefaultContext), "Delete repository wiki", repo.WikiPath())
+		admin_model.RemoveAllWithNotice("Delete repository wiki", repo.WikiPath())
 	}
 
 	// Remove archives
 	for i := range archivePaths {
-		removeStorageWithNotice(db.GetEngine(db.DefaultContext), storage.RepoArchives, "Delete repo archive file", archivePaths[i])
+		admin_model.RemoveStorageWithNotice(storage.RepoArchives, "Delete repo archive file", archivePaths[i])
 	}
 
 	// Remove lfs objects
 	for i := range lfsPaths {
-		removeStorageWithNotice(db.GetEngine(db.DefaultContext), storage.LFS, "Delete orphaned LFS file", lfsPaths[i])
+		admin_model.RemoveStorageWithNotice(storage.LFS, "Delete orphaned LFS file", lfsPaths[i])
 	}
 
 	// Remove issue attachment files.
 	for i := range attachmentPaths {
-		RemoveStorageWithNotice(storage.Attachments, "Delete issue attachment", attachmentPaths[i])
+		admin_model.RemoveStorageWithNotice(storage.Attachments, "Delete issue attachment", attachmentPaths[i])
 	}
 
 	// Remove release attachment files.
 	for i := range releaseAttachments {
-		RemoveStorageWithNotice(storage.Attachments, "Delete release attachment", releaseAttachments[i])
+		admin_model.RemoveStorageWithNotice(storage.Attachments, "Delete release attachment", releaseAttachments[i])
 	}
 
 	// Remove attachment with no issue_id and release_id.
 	for i := range newAttachmentPaths {
-		RemoveStorageWithNotice(storage.Attachments, "Delete issue attachment", attachmentPaths[i])
+		admin_model.RemoveStorageWithNotice(storage.Attachments, "Delete issue attachment", attachmentPaths[i])
 	}
 
 	if len(repo.Avatar) > 0 {
diff --git a/models/user.go b/models/user.go
index a87929a35f..cc6c5a5578 100644
--- a/models/user.go
+++ b/models/user.go
@@ -22,6 +22,7 @@ import (
 
 	_ "image/jpeg" // Needed for jpeg support
 
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/login"
 	"code.gitea.io/gitea/models/unit"
@@ -1148,7 +1149,8 @@ func deleteBeans(e db.Engine, beans ...interface{}) (err error) {
 	return nil
 }
 
-func deleteUser(e db.Engine, u *User) error {
+func deleteUser(ctx context.Context, u *User) error {
+	e := db.GetEngine(ctx)
 	// Note: A user owns any repository or belongs to any organization
 	//	cannot perform delete operation.
 
@@ -1304,7 +1306,7 @@ func deleteUser(e db.Engine, u *User) error {
 	path := UserPath(u.Name)
 	if err = util.RemoveAll(path); err != nil {
 		err = fmt.Errorf("Failed to RemoveAll %s: %v", path, err)
-		_ = createNotice(e, NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
+		_ = admin_model.CreateNoticeCtx(ctx, admin_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
 		return err
 	}
 
@@ -1312,7 +1314,7 @@ func deleteUser(e db.Engine, u *User) error {
 		avatarPath := u.CustomAvatarRelativePath()
 		if err = storage.Avatars.Delete(avatarPath); err != nil {
 			err = fmt.Errorf("Failed to remove %s: %v", avatarPath, err)
-			_ = createNotice(e, NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
+			_ = admin_model.CreateNoticeCtx(ctx, admin_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
 			return err
 		}
 	}
@@ -1328,18 +1330,18 @@ func DeleteUser(u *User) (err error) {
 		return fmt.Errorf("%s is an organization not a user", u.Name)
 	}
 
-	sess := db.NewSession(db.DefaultContext)
-	defer sess.Close()
-	if err = sess.Begin(); err != nil {
+	ctx, committer, err := db.TxContext()
+	if err != nil {
 		return err
 	}
+	defer committer.Close()
 
-	if err = deleteUser(sess, u); err != nil {
+	if err = deleteUser(ctx, u); err != nil {
 		// Note: don't wrapper error here.
 		return err
 	}
 
-	return sess.Commit()
+	return committer.Commit()
 }
 
 // DeleteInactiveUsers deletes all inactive users and email addresses.
@@ -1825,3 +1827,16 @@ func GetUserByOpenID(uri string) (*User, error) {
 
 	return nil, ErrUserNotExist{0, uri, 0}
 }
+
+// GetAdminUser returns the first administrator
+func GetAdminUser() (*User, error) {
+	var admin User
+	has, err := db.GetEngine(db.DefaultContext).Where("is_admin=?", true).Get(&admin)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrUserNotExist{}
+	}
+
+	return &admin, nil
+}
diff --git a/modules/repository/check.go b/modules/repository/check.go
index 1857242f50..36bd4e2e0d 100644
--- a/modules/repository/check.go
+++ b/modules/repository/check.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
@@ -38,7 +39,7 @@ func GitFsck(ctx context.Context, timeout time.Duration, args []string) error {
 			repoPath := repo.RepoPath()
 			if err := git.Fsck(ctx, repoPath, timeout, args...); err != nil {
 				log.Warn("Failed to health check repository (%v): %v", repo, err)
-				if err = models.CreateRepositoryNotice("Failed to health check repository (%s): %v", repo.FullName(), err); err != nil {
+				if err = admin_model.CreateRepositoryNotice("Failed to health check repository (%s): %v", repo.FullName(), err); err != nil {
 					log.Error("CreateRepositoryNotice: %v", err)
 				}
 			}
@@ -87,7 +88,7 @@ func GitGcRepos(ctx context.Context, timeout time.Duration, args ...string) erro
 			if err != nil {
 				log.Error("Repository garbage collection failed for %v. Stdout: %s\nError: %v", repo, stdout, err)
 				desc := fmt.Sprintf("Repository garbage collection failed for %s. Stdout: %s\nError: %v", repo.RepoPath(), stdout, err)
-				if err = models.CreateRepositoryNotice(desc); err != nil {
+				if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 					log.Error("CreateRepositoryNotice: %v", err)
 				}
 				return fmt.Errorf("Repository garbage collection failed in repo: %s: Error: %v", repo.FullName(), err)
@@ -97,7 +98,7 @@ func GitGcRepos(ctx context.Context, timeout time.Duration, args ...string) erro
 			if err := repo.UpdateSize(db.DefaultContext); err != nil {
 				log.Error("Updating size as part of garbage collection failed for %v. Stdout: %s\nError: %v", repo, stdout, err)
 				desc := fmt.Sprintf("Updating size as part of garbage collection failed for %s. Stdout: %s\nError: %v", repo.RepoPath(), stdout, err)
-				if err = models.CreateRepositoryNotice(desc); err != nil {
+				if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 					log.Error("CreateRepositoryNotice: %v", err)
 				}
 				return fmt.Errorf("Updating size as part of garbage collection failed in repo: %s: Error: %v", repo.FullName(), err)
@@ -139,7 +140,7 @@ func gatherMissingRepoRecords(ctx context.Context) ([]*models.Repository, error)
 		if strings.HasPrefix(err.Error(), "Aborted gathering missing repo") {
 			return nil, err
 		}
-		if err2 := models.CreateRepositoryNotice("gatherMissingRepoRecords: %v", err); err2 != nil {
+		if err2 := admin_model.CreateRepositoryNotice("gatherMissingRepoRecords: %v", err); err2 != nil {
 			log.Error("CreateRepositoryNotice: %v", err2)
 		}
 		return nil, err
@@ -167,7 +168,7 @@ func DeleteMissingRepositories(ctx context.Context, doer *models.User) error {
 		log.Trace("Deleting %d/%d...", repo.OwnerID, repo.ID)
 		if err := models.DeleteRepository(doer, repo.OwnerID, repo.ID); err != nil {
 			log.Error("Failed to DeleteRepository %s [%d]: Error: %v", repo.FullName(), repo.ID, err)
-			if err2 := models.CreateRepositoryNotice("Failed to DeleteRepository %s [%d]: Error: %v", repo.FullName(), repo.ID, err); err2 != nil {
+			if err2 := admin_model.CreateRepositoryNotice("Failed to DeleteRepository %s [%d]: Error: %v", repo.FullName(), repo.ID, err); err2 != nil {
 				log.Error("CreateRepositoryNotice: %v", err)
 			}
 		}
@@ -195,7 +196,7 @@ func ReinitMissingRepositories(ctx context.Context) error {
 		log.Trace("Initializing %d/%d...", repo.OwnerID, repo.ID)
 		if err := git.InitRepository(repo.RepoPath(), true); err != nil {
 			log.Error("Unable (re)initialize repository %d at %s. Error: %v", repo.ID, repo.RepoPath(), err)
-			if err2 := models.CreateRepositoryNotice("InitRepository [%d]: %v", repo.ID, err); err2 != nil {
+			if err2 := admin_model.CreateRepositoryNotice("InitRepository [%d]: %v", repo.ID, err); err2 != nil {
 				log.Error("CreateRepositoryNotice: %v", err2)
 			}
 		}
diff --git a/routers/web/admin/notice.go b/routers/web/admin/notice.go
index fab3aba533..3613f428ed 100644
--- a/routers/web/admin/notice.go
+++ b/routers/web/admin/notice.go
@@ -9,7 +9,7 @@ import (
 	"net/http"
 	"strconv"
 
-	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/log"
@@ -26,13 +26,13 @@ func Notices(ctx *context.Context) {
 	ctx.Data["PageIsAdmin"] = true
 	ctx.Data["PageIsAdminNotices"] = true
 
-	total := models.CountNotices()
+	total := admin_model.CountNotices()
 	page := ctx.FormInt("page")
 	if page <= 1 {
 		page = 1
 	}
 
-	notices, err := models.Notices(page, setting.UI.Admin.NoticePagingNum)
+	notices, err := admin_model.Notices(page, setting.UI.Admin.NoticePagingNum)
 	if err != nil {
 		ctx.ServerError("Notices", err)
 		return
@@ -57,7 +57,7 @@ func DeleteNotices(ctx *context.Context) {
 		}
 	}
 
-	if err := models.DeleteNoticesByIDs(ids); err != nil {
+	if err := admin_model.DeleteNoticesByIDs(ids); err != nil {
 		ctx.Flash.Error("DeleteNoticesByIDs: " + err.Error())
 		ctx.Status(500)
 	} else {
@@ -68,7 +68,7 @@ func DeleteNotices(ctx *context.Context) {
 
 // EmptyNotices delete all the notices
 func EmptyNotices(ctx *context.Context) {
-	if err := models.DeleteNotices(0, 0); err != nil {
+	if err := admin_model.DeleteNotices(0, 0); err != nil {
 		ctx.ServerError("DeleteNotices", err)
 		return
 	}
diff --git a/routers/web/repo/middlewares.go b/routers/web/repo/middlewares.go
index 2505443504..a5d478dd73 100644
--- a/routers/web/repo/middlewares.go
+++ b/routers/web/repo/middlewares.go
@@ -7,7 +7,7 @@ package repo
 import (
 	"fmt"
 
-	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/git"
 )
@@ -23,7 +23,7 @@ func SetEditorconfigIfExists(ctx *context.Context) {
 
 	if err != nil && !git.IsErrNotExist(err) {
 		description := fmt.Sprintf("Error while getting .editorconfig file: %v", err)
-		if err := models.CreateRepositoryNotice(description); err != nil {
+		if err := admin_model.CreateRepositoryNotice(description); err != nil {
 			ctx.ServerError("ErrCreatingReporitoryNotice", err)
 		}
 		return
diff --git a/services/cron/tasks.go b/services/cron/tasks.go
index 56c363e0b8..d29bf6d6bd 100644
--- a/services/cron/tasks.go
+++ b/services/cron/tasks.go
@@ -11,6 +11,7 @@ import (
 	"sync"
 
 	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/log"
@@ -89,18 +90,18 @@ func (t *Task) RunWithUser(doer *models.User, config Config) {
 		if err := t.fun(ctx, doer, config); err != nil {
 			if db.IsErrCancelled(err) {
 				message := err.(db.ErrCancelled).Message
-				if err := models.CreateNotice(models.NoticeTask, config.FormatMessage(t.Name, "aborted", doer, message)); err != nil {
+				if err := admin_model.CreateNotice(admin_model.NoticeTask, config.FormatMessage(t.Name, "aborted", doer, message)); err != nil {
 					log.Error("CreateNotice: %v", err)
 				}
 				return
 			}
-			if err := models.CreateNotice(models.NoticeTask, config.FormatMessage(t.Name, "error", doer, err)); err != nil {
+			if err := admin_model.CreateNotice(admin_model.NoticeTask, config.FormatMessage(t.Name, "error", doer, err)); err != nil {
 				log.Error("CreateNotice: %v", err)
 			}
 			return
 		}
 		if config.DoNoticeOnSuccess() {
-			if err := models.CreateNotice(models.NoticeTask, config.FormatMessage(t.Name, "finished", doer)); err != nil {
+			if err := admin_model.CreateNotice(admin_model.NoticeTask, config.FormatMessage(t.Name, "finished", doer)); err != nil {
 				log.Error("CreateNotice: %v", err)
 			}
 		}
diff --git a/services/migrations/gitea_downloader.go b/services/migrations/gitea_downloader.go
index 51ef0292df..00180adf41 100644
--- a/services/migrations/gitea_downloader.go
+++ b/services/migrations/gitea_downloader.go
@@ -15,7 +15,7 @@ import (
 	"strings"
 	"time"
 
-	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/modules/log"
 	base "code.gitea.io/gitea/modules/migration"
 	"code.gitea.io/gitea/modules/proxy"
@@ -417,7 +417,7 @@ func (g *GiteaDownloader) GetIssues(page, perPage int) ([]*base.Issue, bool, err
 		reactions, err := g.getIssueReactions(issue.Index)
 		if err != nil {
 			log.Warn("Unable to load reactions during migrating issue #%d to %s/%s. Error: %v", issue.Index, g.repoOwner, g.repoName, err)
-			if err2 := models.CreateRepositoryNotice(
+			if err2 := admin_model.CreateRepositoryNotice(
 				fmt.Sprintf("Unable to load reactions during migrating issue #%d to %s/%s. Error: %v", issue.Index, g.repoOwner, g.repoName, err)); err2 != nil {
 				log.Error("create repository notice failed: ", err2)
 			}
@@ -479,7 +479,7 @@ func (g *GiteaDownloader) GetComments(opts base.GetCommentOptions) ([]*base.Comm
 			reactions, err := g.getCommentReactions(comment.ID)
 			if err != nil {
 				log.Warn("Unable to load comment reactions during migrating issue #%d for comment %d to %s/%s. Error: %v", opts.Context.ForeignID(), comment.ID, g.repoOwner, g.repoName, err)
-				if err2 := models.CreateRepositoryNotice(
+				if err2 := admin_model.CreateRepositoryNotice(
 					fmt.Sprintf("Unable to load reactions during migrating issue #%d for comment %d to %s/%s. Error: %v", opts.Context.ForeignID(), comment.ID, g.repoOwner, g.repoName, err)); err2 != nil {
 					log.Error("create repository notice failed: ", err2)
 				}
@@ -557,7 +557,7 @@ func (g *GiteaDownloader) GetPullRequests(page, perPage int) ([]*base.PullReques
 		reactions, err := g.getIssueReactions(pr.Index)
 		if err != nil {
 			log.Warn("Unable to load reactions during migrating pull #%d to %s/%s. Error: %v", pr.Index, g.repoOwner, g.repoName, err)
-			if err2 := models.CreateRepositoryNotice(
+			if err2 := admin_model.CreateRepositoryNotice(
 				fmt.Sprintf("Unable to load reactions during migrating pull #%d to %s/%s. Error: %v", pr.Index, g.repoOwner, g.repoName, err)); err2 != nil {
 				log.Error("create repository notice failed: ", err2)
 			}
diff --git a/services/migrations/migrate.go b/services/migrations/migrate.go
index 21be2d3b0d..e6d5e8e4cc 100644
--- a/services/migrations/migrate.go
+++ b/services/migrations/migrate.go
@@ -14,6 +14,7 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/matchlist"
 	base "code.gitea.io/gitea/modules/migration"
@@ -122,7 +123,7 @@ func MigrateRepository(ctx context.Context, doer *models.User, ownerName string,
 		if err1 := uploader.Rollback(); err1 != nil {
 			log.Error("rollback failed: %v", err1)
 		}
-		if err2 := models.CreateRepositoryNotice(fmt.Sprintf("Migrate repository from %s failed: %v", opts.OriginalURL, err)); err2 != nil {
+		if err2 := admin_model.CreateRepositoryNotice(fmt.Sprintf("Migrate repository from %s failed: %v", opts.OriginalURL, err)); err2 != nil {
 			log.Error("create respotiry notice failed: ", err2)
 		}
 		return nil, err
diff --git a/services/mirror/mirror_pull.go b/services/mirror/mirror_pull.go
index 84644145f7..67eaa61c9c 100644
--- a/services/mirror/mirror_pull.go
+++ b/services/mirror/mirror_pull.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/cache"
 	"code.gitea.io/gitea/modules/git"
@@ -170,7 +171,7 @@ func pruneBrokenReferences(ctx context.Context,
 
 		log.Error("Failed to prune mirror repository %s%-v references:\nStdout: %s\nStderr: %s\nErr: %v", wiki, m.Repo, stdoutMessage, stderrMessage, pruneErr)
 		desc := fmt.Sprintf("Failed to prune mirror repository %s'%s' references: %s", wiki, repoPath, stderrMessage)
-		if err := models.CreateRepositoryNotice(desc); err != nil {
+		if err := admin_model.CreateRepositoryNotice(desc); err != nil {
 			log.Error("CreateRepositoryNotice: %v", err)
 		}
 		// this if will only be reached on a successful prune so try to get the mirror again
@@ -239,7 +240,7 @@ func runSync(ctx context.Context, m *models.Mirror) ([]*mirrorSyncResult, bool)
 		if err != nil {
 			log.Error("Failed to update mirror repository %-v:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
 			desc := fmt.Sprintf("Failed to update mirror repository '%s': %s", repoPath, stderrMessage)
-			if err = models.CreateRepositoryNotice(desc); err != nil {
+			if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 				log.Error("CreateRepositoryNotice: %v", err)
 			}
 			return nil, false
@@ -323,7 +324,7 @@ func runSync(ctx context.Context, m *models.Mirror) ([]*mirrorSyncResult, bool)
 			if err != nil {
 				log.Error("Failed to update mirror repository wiki %-v:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
 				desc := fmt.Sprintf("Failed to update mirror repository wiki '%s': %s", wikiPath, stderrMessage)
-				if err = models.CreateRepositoryNotice(desc); err != nil {
+				if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 					log.Error("CreateRepositoryNotice: %v", err)
 				}
 				return nil, false
@@ -524,7 +525,7 @@ func checkAndUpdateEmptyRepository(m *models.Mirror, gitRepo *git.Repository, re
 			if !git.IsErrUnsupportedVersion(err) {
 				log.Error("Failed to update default branch of underlying git repository %-v. Error: %v", m.Repo, err)
 				desc := fmt.Sprintf("Failed to uupdate default branch of underlying git repository '%s': %v", m.Repo.RepoPath(), err)
-				if err = models.CreateRepositoryNotice(desc); err != nil {
+				if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 					log.Error("CreateRepositoryNotice: %v", err)
 				}
 				return false
@@ -535,7 +536,7 @@ func checkAndUpdateEmptyRepository(m *models.Mirror, gitRepo *git.Repository, re
 		if err := models.UpdateRepositoryCols(m.Repo, "default_branch", "is_empty"); err != nil {
 			log.Error("Failed to update default branch of repository %-v. Error: %v", m.Repo, err)
 			desc := fmt.Sprintf("Failed to uupdate default branch of repository '%s': %v", m.Repo.RepoPath(), err)
-			if err = models.CreateRepositoryNotice(desc); err != nil {
+			if err = admin_model.CreateRepositoryNotice(desc); err != nil {
 				log.Error("CreateRepositoryNotice: %v", err)
 			}
 			return false
diff --git a/services/wiki/wiki.go b/services/wiki/wiki.go
index 9d57ac432f..2db982a50f 100644
--- a/services/wiki/wiki.go
+++ b/services/wiki/wiki.go
@@ -12,6 +12,7 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
+	admin_model "code.gitea.io/gitea/models/admin"
 	"code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
@@ -374,6 +375,6 @@ func DeleteWiki(repo *models.Repository) error {
 		return err
 	}
 
-	models.RemoveAllWithNotice("Delete repository wiki", repo.WikiPath())
+	admin_model.RemoveAllWithNotice("Delete repository wiki", repo.WikiPath())
 	return nil
 }