mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-11-16 12:34:45 +00:00
df40ffa9dc
In some cases a file read is not completed in a single call into the JFFS2 layer and the inode is left in the READING state. When this happens, it's possible for a garbage collection pass to be initiated before completion of the read. In some such cases, the garbage collection pass is executed in a tight loop that expects granular locking to allow forward progress of the read between collection passes. With RTEMS monolithic locking of the JFFS2 layer, forward progress is not possible in this situation since the monolithic lock is never released inside the loop. The solution is to have the garbage collection pass return failure when no progress is possible due to a bad inode state. This allows the read to complete and the collection pass can be attempted at a later time. Closes #5365
Real-Time Executive for Multiprocessing Systems
RTEMS is a real-time executive (kernel) which provides a high performance environment for embedded applications with the following features:
- Standards based user interfaces.
- Multitasking capabilities.
- Homogeneous and heterogeneous multiprocessor systems.
- Event-driven, priority-based, preemptive scheduling.
- Optional rate monotonic scheduling.
- Intertask communication and synchronisation.
- Priority inheritance.
- Responsive interrupt management.
- Dynamic memory allocation.
- High level of user configurability.
- Open source with a friendly user license.
Project git repositories are located at:
Online documentation is available at:
RTEMS Doxygen for CPUKit:
RTEMS POSIX 1003.1 Compliance Guide:
RTEMS Mailing Lists for general purpose use the users list and for developers use the devel list.
The version number for this software is indicated in the VERSION file.