the shell will make the xfs fs locked

[tom wang <wddi_1976@xxxxxxxxxxxx>]

xfs-developers:
 when I run the shell program as following on a xfs
FS, the process will locked.

#!/bin/sh
for((i=0;i<300000;i++)); do
     truncate /mnt/current/a $(($i*8192));
     cat /tmp/4kfile >> /mnt/current/a
done
/tmp/4kfile is a 4096-sized file
xfs FS  mounted at /mnt/current
the truncate program:
     
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
        long long length = 0;

        if( argc < 2 || argc > 3 ){
                printf("Usage: truncate filename [length]\n");
                return -1;
        }

        if( argv[2] )
                length = atoll(argv[2]);

        if( truncate64( argv[1], length ) ){
                perror("truncate failed");
                return -1;
        }
        return 0;
}


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