Module Compatibility

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hi,
    i am developing a module related to filesystem. My problem is this works on my machine, but its not working on another machine with different hardaware configuration.
 
Module Details:
in the module i used get_sb_nodev(), to get a super block, and using it i traversed through list of super blocks and terminated the loop when i got required super block(vfat). So it prints list of super blocks until required and then terminates. This code is implemented without using list_head.
 
Same code when run on another machine, get compiled properly, is inserted and without printing list it gets a NULL pointer in list and breaks.
 
Two machines are using same kernel 2.6.8.24(SUSE 9.2) but hardware configuration differs.
 
First is (working)
Intel 915 GAV, Intel 3.0 GHz (HT), 512 MB DDR RAM
 
 
Second  (not working)
Intel 845, Intel 2.4 GHz, 256 MB DDR RAM
 
 thanx in advance.
 
 
 
 

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