Change Details

This contains tmpfs as an example fs and lseek as an example converted consumer. Allows for unlocked retrieval of frequently used parameters (most notably size). In the current form it is suitable to use in exec as well. It is *not* yet fit for mmap due to missing va_flags, but provisions are made to allow fro growing the structure and catching filesytems which did not get updated. New type is declared to make things less error prone. I'm leaning towards adding an _UNLOCKED variant and removing the locked parameter. Less things to sanity check and also less error prone, albeit yet another extension to the API.

Provides a cheaper alternative for VOP_GETATTR for when only a fraction of the fields are needed (most notably for consumers which only want the size). The new struct is *not* yet fit for mmap due to missing va_flags, but provisions are made to allow fro growing the structure and catching filesytems which did not get updated. The VOP_UGETATTR routine can be called unlocked which can be exploited by SMR-aware filesystems to provide scalable operation. New type is declared to make things less error prone. Support for UFS and TMPFS is included, along with sample conversion of lseek and execve.

This contains tmpfs as an example fs and lseek as an example converted consumerProvides a cheaper alternative for VOP_GETATTR for when only a fraction of the fields are needed (most notably for consumers which only want the size). The new struct is *not* yet fit for mmap due to missing va_flags, but provisions are made to allow fro growing the structure and catching filesytems which did not get updated. Allows for unlocked retrieval of frequently used parameters (most notably size). In the current form it is suitable to use in exec as well. It is *not* yet fit for mmap due to missing va_flags, but provisions are made to allow fro growing the structure and catching filesytems which did not get updatedThe VOP_UGETATTR routine can be called unlocked which can be exploited by SMR-aware filesystems to provide scalable operation. New type is declared to make things less error prone. I'm leaning towards adding an _UNLOCKED variant and removing the locked parameter. Less things to sanity check and also less error proneSupport for UFS and TMPFS is included, albeit yet another extenalong with sample conversion to the APIof lseek and execve.