Streamlined file system memory input/output operations

A system comprising:

• a processing system;
• and
• a computer-readable medium having encoded thereon computer-readable instructions that when executed by the processing system, cause the system to perform operations comprising:
• receiving, from a thread, a request for an external lock for file data distributed across a plurality of storage locations;
• determining whether an optimization flag indicates that a status of the external lock for the file data is active;
• in response to determining that the optimization flag indicates that the status of the external lock for the file data is active, executing an operation on the file data via an indirect access path that includes a check for an external lock conflict with another thread;
• or
• in response to determining that the optimization flag indicates that the status of the external lock for the file data is inactive;
• granting the request for the external lock;
• and
• executing the operation on the file data via a direct access path that omits the check for the external lock conflict with the other thread.

A system comprising:

• a processing system;
• and
• a computer-readable medium having encoded thereon computer-readable instructions that when executed by the processing system cause the system to perform operations comprising:
• receiving, from a first thread, a request for an external lock for file data distributed across a plurality of storage locations;
• determining that an optimization flag indicates that a status of the external lock for the file data is inactive;
• in response to determining that the optimization flag indicates that the status of the external lock for the file data is inactive:
• granting the request for the external lock to the first thread;
• and
• configuring the optimization flag to indicate that the external lock for the file data is active;
• determining, from a cache map structure, that an internal latch associated with a second thread is applied to a storage location of the plurality of storage locations, the storage location containing a subset of the file data indicating that the second thread is executing a first operation on the subset of the file data;
• in response to determining that the internal latch is applied to the storage location, awaiting a release of the internal latch by the second thread;
• and
• in response to the release of the internal latch by the second thread, executing a second operation by the first thread on the file data via a direct access path that omits a check for an external lock conflict enabled by the optimization flag.