"if" statements of checkpoint updates have too many responsibilties.
This results in unclear code flow and duplicated code.
Refactor checkpoint update code and simplify "if" statements.
Signed-off-by: Mateusz Kusiak <mateusz.kusiak@xxxxxxxxx>
---
monitor.c | 51 +++++++++++++++++++++++++--------------------------
1 file changed, 25 insertions(+), 26 deletions(-)
diff --git a/monitor.c b/monitor.c
index b8d9e8810b17..be0bec785080 100644
--- a/monitor.c
+++ b/monitor.c
@@ -412,6 +412,7 @@ static int read_and_act(struct active_array *a, fd_set *fds)
int ret = 0;
int count = 0;
struct timeval tv;
+ bool write_checkpoint = false;
a->next_state = bad_word;
a->next_action = bad_action;
@@ -564,40 +565,38 @@ static int read_and_act(struct active_array *a, fd_set *fds)
}
}
- /* Handle reshape checkpointing
- */
- if ((a->curr_action == idle && a->prev_action == reshape) ||
- (a->curr_action == reshape && sync_completed > a->last_checkpoint)) {
- /* Reshape has progressed or completed so we need to
- * update the array state - and possibly the array size
- */
+ /* Update reshape checkpoint, depending if it finished or progressed */
+ if (a->curr_action == idle && a->prev_action == reshape) {
+ char buf[SYSFS_MAX_BUF_SIZE];
+
if (sync_completed != 0)
a->last_checkpoint = sync_completed;
- /* We might need to update last_checkpoint depending on
- * the reason that reshape finished.
- * if array reshape is really finished:
- * set check point to the end, this allows
- * set_array_state() to finalize reshape in metadata
- * if reshape if broken: do not set checkpoint to the end
- * this allows for reshape restart from checkpoint
+
+ /*
+ * If reshape really finished, set checkpoint to the end to finalize it.
+ * Do not set checkpoint if reshape is broken.
+ * Reshape will restart from last checkpoint.
*/
- if ((a->curr_action != reshape) &&
- (a->prev_action == reshape)) {
- char buf[SYSFS_MAX_BUF_SIZE];
- if ((sysfs_get_str(&a->info, NULL,
- "reshape_position",
- buf,
- sizeof(buf)) >= 0) &&
- str_is_none(buf) == true)
+ if (sysfs_get_str(&a->info, NULL, "reshape_position", buf, sizeof(buf)) >= 0)
+ if (str_is_none(buf) == true)
a->last_checkpoint = a->info.component_size;
- }
- a->container->ss->set_array_state(a, a->curr_state <= clean);
- a->last_checkpoint = sync_completed;
+
+ write_checkpoint = true;
}
- if (sync_completed > a->last_checkpoint) {
+ if (a->curr_action >= reshape && sync_completed > a->last_checkpoint) {
+ /* Update checkpoint if neither reshape nor idle action */
a->last_checkpoint = sync_completed;
+
+ write_checkpoint = true;
+ }
+
+ /* Save checkpoint */
+ if (write_checkpoint) {
a->container->ss->set_array_state(a, a->curr_state <= clean);
+
+ if (a->curr_action <= reshape)
+ a->last_checkpoint = sync_completed;
}
if (sync_completed >= a->info.component_size)
--
2.35.3
