diff options
| author | Tim Chase <[email protected]> | 2015-07-03 09:24:24 -0500 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-07-06 09:36:13 -0700 |
| commit | 1cd777340bb2feaedbbdb48cab27ce5ffa14c353 (patch) | |
| tree | 7d1120db7df854760680e9504f63e76766b6bdaa | |
| parent | e16b3fcc610fab2dcf3381486b2640dc2a2213cb (diff) | |
Prevent reclaim in metaslab preload threads
Reclaim during metaslab preloading can cause deadlocks involving znode
z_lock and ARC buffer header ht_lock.
Signed-off-by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #3532.
| -rw-r--r-- | module/zfs/metaslab.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/module/zfs/metaslab.c b/module/zfs/metaslab.c index d6ee81c85..5544859b6 100644 --- a/module/zfs/metaslab.c +++ b/module/zfs/metaslab.c @@ -1579,6 +1579,7 @@ metaslab_preload(void *arg) { metaslab_t *msp = arg; spa_t *spa = msp->ms_group->mg_vd->vdev_spa; + fstrans_cookie_t cookie = spl_fstrans_mark(); ASSERT(!MUTEX_HELD(&msp->ms_group->mg_lock)); @@ -1592,6 +1593,7 @@ metaslab_preload(void *arg) */ msp->ms_access_txg = spa_syncing_txg(spa) + metaslab_unload_delay + 1; mutex_exit(&msp->ms_lock); + spl_fstrans_unmark(cookie); } static void |