Shared memory not enabled in 2.4.0?

From: Steven_Snyder@3com.com
Date: Mon Jan 08 2001 - 14:11:19 EST


For some reason shared memory is not being enabled on my system running kernel
v2.4.0 (on RedHat v6.2, with all updates applied).

Per the documentation I have this line in my /etc/fstab:

     none /dev/shm shm defaults 0 0

Yes, I have created this subdirectory:

     # ls -l /dev | grep shm
     drwxrwxrwt 1 root root 0 Jan 7 11:54 shm

No complaints are seen at startup, yet I still have no shared memory:

     # cat /proc/meminfo
             total: used: free: shared: buffers: cached:
     Mem: 130293760 123133952 7159808 0 30371840 15179776
     Swap: 136241152 0 136241152
     MemTotal: 127240 kB
     MemFree: 6992 kB
     MemShared: 0 kB
     Buffers: 29660 kB
     Cached: 14824 kB
     Active: 3400 kB
     Inact_dirty: 37872 kB
     Inact_clean: 3212 kB
     Inact_target: 4 kB
     HighTotal: 0 kB
     HighFree: 0 kB
     LowTotal: 127240 kB
     LowFree: 6992 kB
     SwapTotal: 133048 kB
     SwapFree: 133048 kB

Is there some configuration option which I missed? Some trick not mentioned in
the doc?

Thank you.

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