SERVER-22541 Refactor RAII locking helpers.

Removes the class 'ScopedTransaction' and moves the responsibility of
abandoning the snapshot onto the GlobalLock class. Also renames the
AutoGetCollectionForRead class to AutoGetCollectionForReadCommand, and
adds a new AutoGetCollectionForRead class. Unlike
AutoGetCollectionForReadCommand, this new class will not update the
namespace on the CurrentOp object, nor will it add an entry to Top.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/mongo/db/catalog/coll_mod.cpp b/src/mongo/db/catalog/coll_mod.cpp
index fdbfd26677b..a2df7e2c791 100644
--- a/src/mongo/db/catalog/coll_mod.cpp
+++ b/src/mongo/db/catalog/coll_mod.cpp
@@ -220,7 +220,6 @@ Status collMod(OperationContext* opCtx,
                const BSONObj& cmdObj,
                BSONObjBuilder* result) {
     StringData dbName = nss.db();
-    ScopedTransaction transaction(opCtx, MODE_IX);
     AutoGetDb autoDb(opCtx, dbName, MODE_X);
     Database* const db = autoDb.getDb();
     Collection* coll = db ? db->getCollection(nss) : nullptr;