Select the parallel decompression mode during mount

configname: CONFIG_SQUASHFS_CHOICE_DECOMP_BY_MOUNT

Linux Kernel Configuration
└─>File systems
└─>Miscellaneous filesystems
└─>Select the parallel decompression mode during mount
In linux kernel since version 6.2 (release Date: 2023-02-19)  
Compile all parallel decompression modes and specify the
decompression mode by setting "threads=" during mount.
default Decompressor parallelisation is SQUASHFS_DECOMP_SINGLE