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Illumos #3522

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3522 zfs module should not allow uninitialized variables
Reviewed by: Sebastien Roy <seb@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>

References:
  https://www.illumos.org/issues/3522
  illumos/illumos-gate@d5285cae91

Ported-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

Porting notes:

1. ZFSOnLinux had already addressed many of these issues because of
   its use of -Wall. However, the manner in which they were addressed
   differed. The illumos fixes replace the ones previously made in
   ZFSOnLinux to reduce code differences.

2. Part of the upstream patch made a small change to arc.c that might
   address zfsonlinux/zfs#1334.

3. The initialization of aclsize in zfs_log_create() differs because
   vsecp is a NULL pointer on ZFSOnLinux.

4. The changes to zfs_register_callbacks() were dropped because it
   has diverged and needs to be resynced.
This commit is contained in:
George Wilson
2013-02-10 22:21:05 -08:00
committed by Brian Behlendorf
parent a35beedfb3
commit a117a6d66e
12 changed files with 31 additions and 22 deletions
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module/zfs/spa.c
+2 -1
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@@ -1443,7 +1443,7 @@ spa_load_l2cache(spa_t *spa)
uint_t nl2cache;
int i, j, oldnvdevs;
uint64_t guid;
vdev_t *vd, **oldvdevs, **newvdevs = NULL;
vdev_t *vd, **oldvdevs, **newvdevs;
spa_aux_vdev_t *sav = &spa->spa_l2cache;
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
@@ -1454,6 +1454,7 @@ spa_load_l2cache(spa_t *spa)
newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_PUSHPAGE);
} else {
nl2cache = 0;
newvdevs = NULL;
}
oldvdevs = sav->sav_vdevs;