diff --git a/models/publickey.go b/models/publickey.go
index 70da8057cea..400486eba7e 100644
--- a/models/publickey.go
+++ b/models/publickey.go
@@ -386,9 +386,6 @@ func ListPublicKeys(uid int64) ([]*PublicKey, error) {
 
 // rewriteAuthorizedKeys finds and deletes corresponding line in authorized_keys file.
 func rewriteAuthorizedKeys(key *PublicKey, p, tmpP string) error {
-	sshOpLocker.Lock()
-	defer sshOpLocker.Unlock()
-
 	fr, err := os.Open(p)
 	if err != nil {
 		return err
@@ -444,6 +441,9 @@ func UpdatePublicKey(key *PublicKey) error {
 }
 
 func deletePublicKey(e *xorm.Session, key *PublicKey) error {
+	sshOpLocker.Lock()
+	defer sshOpLocker.Unlock()
+
 	has, err := e.Get(key)
 	if err != nil {
 		return err
diff --git a/modules/base/markdown.go b/modules/base/markdown.go
index d06e1338e77..03f1287c1d2 100644
--- a/modules/base/markdown.go
+++ b/modules/base/markdown.go
@@ -198,7 +198,6 @@ func RenderRawMarkdown(body []byte, urlPrefix string) []byte {
 	extensions |= blackfriday.EXTENSION_FENCED_CODE
 	extensions |= blackfriday.EXTENSION_AUTOLINK
 	extensions |= blackfriday.EXTENSION_STRIKETHROUGH
-	extensions |= blackfriday.EXTENSION_HARD_LINE_BREAK
 	extensions |= blackfriday.EXTENSION_SPACE_HEADERS
 	extensions |= blackfriday.EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK