Removal of dump_stack()s from /fs/ubifs/io.c

["Shreya Gangan (shgangan)" <shgangan@xxxxxxxxx>]

Hi,
    
 /fs/ubifs/io.c has dump_stack() in multiple functions upon errors and sometimes warnings. 
Since the error and warning messages seem to be unique, the functional value of these dump_stacks is not apparent.
Why are these dump_stacks required and what issues might occur upon the removal of these?

Example: 
What is the usecase of the dump_stack in the following code snippet in file /fs/ubifs/io.c?
    if (err) {
    		ubifs_err(c, "changing %d bytes in LEB %d failed, error %d",
    			  len, lnum, err);
    		ubifs_ro_mode(c, err);
    		dump_stack();
    	}
    
Regards,

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