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Fix zdb segfault

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On 32-bit systems setting 'zfs_arc_max = 256M' in zdb results in the
following segmentation fault.  Rather than reverting 0ec0724 which
introduced this flaw this code is only used for 64-bit builds.

Segmentation fault (core dumped)
ztest: '/sbin/zdb -bcc -d -U /var/tmp/zpool.cache ztest' exit code 139
child exited with code 3

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2014-10-23 15:26:49 -07:00
parent 0ec072487b
commit adc90e9d94
1 changed files with 2 additions and 0 deletions
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2
cmd/zdb/zdb.c
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@ -3522,11 +3522,13 @@ main(int argc, char **argv)
usage();
}
#if defined(_LP64)
/*
* ZDB does not typically re-read blocks; therefore limit the ARC
* to 256 MB, which can be used entirely for metadata.
*/
zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
#endif
kernel_init(FREAD);
if ((g_zfs = libzfs_init()) == NULL)