diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/zil_impl.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/include/sys/zil_impl.h b/include/sys/zil_impl.h index 6901d51f0..174fef334 100644 --- a/include/sys/zil_impl.h +++ b/include/sys/zil_impl.h @@ -47,10 +47,11 @@ extern "C" { * via zil_lwb_write_issue(). Again, the zilog's "zl_issuer_lock" must * be held when making this transition. * - * After the lwb's zio completes, and the vdev's are flushed, the lwb - * will transition into the "done" state via zil_lwb_write_done(). When - * transitioning from "issued" to "done", the zilog's "zl_lock" must be - * held, *not* the "zl_issuer_lock". + * After the lwb's write zio completes, it transitions into the "write + * done" state via zil_lwb_write_done(); and then into the "flush done" + * state via zil_lwb_flush_vdevs_done(). When transitioning from + * "issued" to "write done", and then from "write done" to "flush done", + * the zilog's "zl_lock" must be held, *not* the "zl_issuer_lock". * * The zilog's "zl_issuer_lock" can become heavily contended in certain * workloads, so we specifically avoid acquiring that lock when @@ -67,13 +68,14 @@ extern "C" { * "zl_issuer_lock" will prevent a concurrent thread from transitioning * that lwb to the "issued" state. Likewise, if an lwb is already in the * "issued" state, holding the "zl_lock" will prevent a concurrent - * thread from transitioning that lwb to the "done" state. + * thread from transitioning that lwb to the "write done" state. */ typedef enum { LWB_STATE_CLOSED, LWB_STATE_OPENED, LWB_STATE_ISSUED, - LWB_STATE_DONE, + LWB_STATE_WRITE_DONE, + LWB_STATE_FLUSH_DONE, LWB_NUM_STATES } lwb_state_t; |