[PATCH 3/3] f2fs:dax: Implement direct access

This patch implements Direct Access (DAX) in F2FS, including: - a mount option to enable DAX - read/write and mmap of regular files in the DAX way - zero-out of non-aligned partial blocks in the DAX way - garbage collection of DAX files - incompatibility of DAX with inline data, atomic or

[PATCH 3/3] f2fs:dax: Implement direct access

This patch implements Direct Access (DAX) in F2FS, including: - a mount option to enable DAX - read/write and mmap of regular files in the DAX way - zero-out of non-aligned partial blocks in the DAX way - garbage collection of DAX files - incompatibility of DAX with inline data, atomic or