2cda2728aa
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>
9 lines
154 B
C
9 lines
154 B
C
#ifndef _LCM_H
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#define _LCM_H
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#include <linux/compiler.h>
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unsigned long lcm(unsigned long a, unsigned long b) __attribute_const__;
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#endif /* _LCM_H */
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