diff --git a/models/issue_milestone.go b/models/issue_milestone.go
index d12c309b87..0001da90ef 100644
--- a/models/issue_milestone.go
+++ b/models/issue_milestone.go
@@ -227,7 +227,7 @@ func ChangeMilestoneStatus(m *Milestone, isClosed bool) (err error) {
 
 	repo.NumMilestones = int(countRepoMilestones(sess, repo.ID))
 	repo.NumClosedMilestones = int(countRepoClosedMilestones(sess, repo.ID))
-	if _, err = sess.Id(repo.ID).AllCols().Update(repo); err != nil {
+	if _, err = sess.Id(repo.ID).Cols("num_milestones, num_closed_milestones").Update(repo); err != nil {
 		return err
 	}
 	return sess.Commit()
@@ -341,7 +341,7 @@ func DeleteMilestoneByRepoID(repoID, id int64) error {
 
 	repo.NumMilestones = int(countRepoMilestones(sess, repo.ID))
 	repo.NumClosedMilestones = int(countRepoClosedMilestones(sess, repo.ID))
-	if _, err = sess.Id(repo.ID).AllCols().Update(repo); err != nil {
+	if _, err = sess.Id(repo.ID).Cols("num_milestones, num_closed_milestones").Update(repo); err != nil {
 		return err
 	}
 
diff --git a/models/issue_user.go b/models/issue_user.go
index 11d47dd0a6..e0110e6dc5 100644
--- a/models/issue_user.go
+++ b/models/issue_user.go
@@ -101,7 +101,7 @@ func UpdateIssueUsersByMentions(e Engine, issueID int64, uids []int64) error {
 
 		iu.IsMentioned = true
 		if has {
-			_, err = e.Id(iu.ID).AllCols().Update(iu)
+			_, err = e.Id(iu.ID).Cols("is_mentioned").Update(iu)
 		} else {
 			_, err = e.Insert(iu)
 		}
diff --git a/models/org.go b/models/org.go
index eaf7ba602c..82a56cac18 100644
--- a/models/org.go
+++ b/models/org.go
@@ -412,7 +412,7 @@ func ChangeOrgUserStatus(orgID, uid int64, public bool) error {
 	}
 
 	ou.IsPublic = public
-	_, err = x.Id(ou.ID).AllCols().Update(ou)
+	_, err = x.Id(ou.ID).Cols("is_public").Update(ou)
 	return err
 }
 
diff --git a/models/org_team.go b/models/org_team.go
index acddc70b58..a9b4fad05b 100644
--- a/models/org_team.go
+++ b/models/org_team.go
@@ -96,7 +96,7 @@ func (t *Team) addRepository(e Engine, repo *Repository) (err error) {
 	}
 
 	t.NumRepos++
-	if _, err = e.Id(t.ID).AllCols().Update(t); err != nil {
+	if _, err = e.Id(t.ID).Cols("num_repos").Update(t); err != nil {
 		return fmt.Errorf("update team: %v", err)
 	}
 
@@ -142,7 +142,7 @@ func (t *Team) removeRepository(e Engine, repo *Repository, recalculate bool) (e
 	}
 
 	t.NumRepos--
-	if _, err = e.Id(t.ID).AllCols().Update(t); err != nil {
+	if _, err = e.Id(t.ID).Cols("num_repos").Update(t); err != nil {
 		return err
 	}
 
@@ -521,7 +521,7 @@ func AddTeamMember(team *Team, userID int64) error {
 	if team.IsOwnerTeam() {
 		ou.IsOwner = true
 	}
-	if _, err := sess.Id(ou.ID).AllCols().Update(ou); err != nil {
+	if _, err := sess.Id(ou.ID).Cols("num_teams, is_owner").Update(ou); err != nil {
 		return err
 	}
 
@@ -552,7 +552,7 @@ func removeTeamMember(e Engine, team *Team, userID int64) error {
 		return err
 	} else if _, err = e.
 		Id(team.ID).
-		AllCols().
+		Cols("num_members").
 		Update(team); err != nil {
 		return err
 	}
@@ -579,7 +579,7 @@ func removeTeamMember(e Engine, team *Team, userID int64) error {
 	}
 	if _, err = e.
 		Id(ou.ID).
-		AllCols().
+		Cols("num_teams").
 		Update(ou); err != nil {
 		return err
 	}
diff --git a/models/pull.go b/models/pull.go
index 8754c119f1..31e1af7e8c 100644
--- a/models/pull.go
+++ b/models/pull.go
@@ -425,7 +425,7 @@ func (pr *PullRequest) setMerged() (err error) {
 	if err = pr.Issue.changeStatus(sess, pr.Merger, pr.Issue.Repo, true); err != nil {
 		return fmt.Errorf("Issue.changeStatus: %v", err)
 	}
-	if _, err = sess.Id(pr.ID).AllCols().Update(pr); err != nil {
+	if _, err = sess.Id(pr.ID).Cols("has_merged").Update(pr); err != nil {
 		return fmt.Errorf("update pull request: %v", err)
 	}
 
diff --git a/models/repo.go b/models/repo.go
index cdaf943944..22a3a83229 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -1458,7 +1458,7 @@ func TransferOwnership(doer *User, newOwnerName string, repo *Repository) error
 			}
 
 			t.NumRepos--
-			if _, err := sess.Id(t.ID).AllCols().Update(t); err != nil {
+			if _, err := sess.Id(t.ID).Cols("num_repos").Update(t); err != nil {
 				return fmt.Errorf("decrease team repository count '%d': %v", t.ID, err)
 			}
 		}
diff --git a/models/repo_collaboration.go b/models/repo_collaboration.go
index 791f022a3f..0448149e6a 100644
--- a/models/repo_collaboration.go
+++ b/models/repo_collaboration.go
@@ -143,7 +143,7 @@ func (repo *Repository) ChangeCollaborationAccessMode(uid int64, mode AccessMode
 
 	if _, err = sess.
 		Id(collaboration.ID).
-		AllCols().
+		Cols("mode").
 		Update(collaboration); err != nil {
 		return fmt.Errorf("update collaboration: %v", err)
 	} else if _, err = sess.Exec("UPDATE access SET mode = ? WHERE user_id = ? AND repo_id = ?", mode, uid, repo.ID); err != nil {
diff --git a/models/ssh_key.go b/models/ssh_key.go
index 539c60e696..c8f65ef0d1 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -477,15 +477,8 @@ func ListPublicKeys(uid int64) ([]*PublicKey, error) {
 		Find(&keys)
 }
 
-// UpdatePublicKey updates given public key.
-func UpdatePublicKey(key *PublicKey) error {
-	_, err := x.Id(key.ID).AllCols().Update(key)
-	return err
-}
-
 // UpdatePublicKeyUpdated updates public key use time.
 func UpdatePublicKeyUpdated(id int64) error {
-	now := time.Now()
 	// Check if key exists before update as affected rows count is unreliable
 	//    and will return 0 affected rows if two updates are made at the same time
 	if cnt, err := x.ID(id).Count(&PublicKey{}); err != nil {
@@ -495,8 +488,7 @@ func UpdatePublicKeyUpdated(id int64) error {
 	}
 
 	_, err := x.ID(id).Cols("updated_unix").Update(&PublicKey{
-		Updated:     now,
-		UpdatedUnix: now.Unix(),
+		UpdatedUnix: time.Now().Unix(),
 	})
 	if err != nil {
 		return err
diff --git a/models/user.go b/models/user.go
index 9adc5bd4e1..dbc15ae68b 100644
--- a/models/user.go
+++ b/models/user.go
@@ -874,6 +874,10 @@ func UpdateUser(u *User) error {
 
 // UpdateUserCols update user according special columns
 func UpdateUserCols(u *User, cols ...string) error {
+	return updateUserCols(x, u, cols...)
+}
+
+func updateUserCols(e Engine, u *User, cols ...string) error {
 	// Organization does not need email
 	u.Email = strings.ToLower(u.Email)
 	if !u.IsOrganization() {
@@ -890,7 +894,7 @@ func UpdateUserCols(u *User, cols ...string) error {
 	u.Website = base.TruncateString(u.Website, 255)
 	u.Description = base.TruncateString(u.Description, 255)
 
-	_, err := x.Id(u.ID).Cols(cols...).Update(u)
+	_, err := e.Id(u.ID).Cols(cols...).Update(u)
 	return err
 }
 
diff --git a/models/user_mail.go b/models/user_mail.go
index 285ba74f61..ba69d9a470 100644
--- a/models/user_mail.go
+++ b/models/user_mail.go
@@ -135,10 +135,10 @@ func (email *EmailAddress) Activate() error {
 	email.IsActivated = true
 	if _, err := sess.
 		Id(email.ID).
-		AllCols().
+		Cols("is_activated").
 		Update(email); err != nil {
 		return err
-	} else if err = updateUser(sess, user); err != nil {
+	} else if err = updateUserCols(sess, user, "rands"); err != nil {
 		return err
 	}
 
@@ -222,7 +222,7 @@ func MakeEmailPrimary(email *EmailAddress) error {
 	}
 
 	user.Email = email.Email
-	if _, err = sess.Id(user.ID).AllCols().Update(user); err != nil {
+	if _, err = sess.Id(user.ID).Cols("email").Update(user); err != nil {
 		return err
 	}