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* lib/lcm.c: quiet sparse noiseH Hartley Sweeten2011-07-261-0/+1
| | | | | | | | | | | The symbol 'lcm' is exported to the kernel (EXPORT_SYMBOL_GPL). Pick up it's definition in <linux/lcm.h> to quiet the sparse noise: warning: symbol 'lcm' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* block: Fix overrun in lcm() and move it to libMartin K. Petersen2010-03-151-0/+15
lcm() was defined to take integer-sized arguments. The supplied arguments are multiplied, however, causing us to overflow given sufficiently large input. That in turn led to incorrect optimal I/O size reporting in some cases (RAID over RAID). Switch lcm() over to unsigned long similar to gcd() and move the function from blk-settings.c to lib. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>