Revision 545c988b2018a593f24d291b66776a0d08525acd authored by Suresh Jayaraman on 06 December 2010, 08:15:50 UTC, committed by Steve French on 08 December 2010, 18:47:54 UTC
As the FIXME points out correctly, now filldir() itself returns -EOVERFLOW if it not possible to represent the inode number supplied by the filesystem in the field provided by userspace. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
1 parent 7d161b7
int_sqrt.c
#include <linux/kernel.h>
#include <linux/module.h>
/**
* int_sqrt - rough approximation to sqrt
* @x: integer of which to calculate the sqrt
*
* A very rough approximation to the sqrt() function.
*/
unsigned long int_sqrt(unsigned long x)
{
unsigned long op, res, one;
op = x;
res = 0;
one = 1UL << (BITS_PER_LONG - 2);
while (one > op)
one >>= 2;
while (one != 0) {
if (op >= res + one) {
op = op - (res + one);
res = res + 2 * one;
}
res /= 2;
one /= 4;
}
return res;
}
EXPORT_SYMBOL(int_sqrt);
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