Quote:
The /dev/shm mount point for tmpfs is included to allow enabling POSIX shared memory. Your kernel must have the required support built into it for this to work -- more about this in the next section. Please note that currently very little software actually uses POSIX shared memory. Therefore you can consider the /dev/shm mount point optional. For more information, see Documentation/filesystems/tmpfs.txt in the kernel source tree.
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this is from the LFS 5.0 book..........IF you don't need/use POSIX,
then edit your /etc/fstab so it does not load........