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Fix FALLOC_FL_PUNCH_HOLE use in randfree_file.c 

The FALLOC_FL_PUNCH_HOLE flag was introduced in the 2.6.38
kernel.  To prevent breaking the build on older systems wrap its use
in a conditional.  When FALLOC_FL_PUNCH_HOLE isn't available
return a non-zero status and error message.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: legend-hua <liu.hua130@zte.com.cn>
Closes #5101
This commit is contained in:
legend-hua 2016-09-18 06:20:10 +08:00 committed by Brian Behlendorf
parent 30f3f2e13c
commit a34f7ab332
1 changed files with 7 additions and 0 deletions
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7
tests/zfs-tests/cmd/randfree_file/randfree_file.c
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@ -98,11 +98,18 @@ main(int argc, char *argv[])
free(buf);
#if defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE)
if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
start_off, off_len) < 0) {
perror("fallocate");
return (1);
}
#else /* !(defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE)) */
{
perror("FALLOC_FL_PUNCH_HOLE unsupported");
return (1);
}
#endif /* defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE) */
return (0);
}