[Ocfs2-devel] About Mark's advice on bug 48
Sonic Zhang
sonic.zhang at intel.com
Fri Mar 26 16:27:39 CST 2004
Hi Mark,
Yes, I find the code in ocfs_daemonize() to allow kernel thread to
receive signals. So, I change the signal process code to make it
compilable under kernel 2.6. Please check my revise.
Thank you.
This patch is for journal.c.
------------------------------------------------------------------
--- ocfs2.old/src/journal.c.old 2004-03-25 10:44:20.000000000 +0800
+++ ocfs2/src/journal.c 2004-03-26 16:08:19.526750568 +0800
@@ -1745,6 +1745,7 @@
ocfs_commit_task *commit = osb->commit;
char name[16];
ocfs_journal * journal = &osb->journal;
+ siginfo_t info;
sprintf (name, "ocfs2cmt-%d", osb->osb_id);
ocfs_daemonize (name, strlen(name));
@@ -1765,7 +1766,21 @@
LOG_TRACE_STR("FLUSH_EVENT: timed out");
break;
case -EINTR:
- finish = 1;
+ /* journal shutdown has asked me to do
+ * one last commit cache and then exit */
+ if (journal->state == OCFS_JOURNAL_IN_SHUTDOWN)
+ finish = 1;
+ if (signal_pending(current)) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+ /* ignore the actual signal */
+ dequeue_signal_lock(current, ¤t->blocked, &info);
+#else
+ spin_lock_irq(¤t->sigmask_lock);
+ /* ignore the actual signal */
+ dequeue_signal(¤t->blocked, &info);
+ spin_unlock_irq(¤t->sigmask_lock);
+#endif
+ }
LOG_TRACE_STR("FLUSH_EVENT: interrupted");
break;
case 0:
@@ -1778,7 +1793,7 @@
if ((OcfsGlobalCtxt.flags & OCFS_FLAG_SHUTDOWN_VOL_THREAD) ||
(osb->osb_flags & OCFS_OSB_FLAGS_BEING_DISMOUNTED))
- break;
+ finish = 1;
//if (!osb->needs_flush && status != 0)
// continue;
@@ -1788,18 +1803,13 @@
if (down_trylock(&osb->trans_lock) != 0) {
LOG_TRACE_ARGS("commit thread: trylock failed, miss=%d\n",
misses);
- if (++misses < OCFS_COMMIT_MISS_MAX)
+ if (++misses < OCFS_COMMIT_MISS_MAX && finish == 0)
continue;
LOG_TRACE_ARGS("commit thread: about to down\n");
down(&osb->trans_lock);
misses = 0;
}
- /* journal shutdown has asked me to do one last commit cache */
- /* this commit cache will leave trans lock held! */
- if (journal->state == OCFS_JOURNAL_IN_SHUTDOWN)
- finish = 1;
-
status = ocfs_commit_cache (osb, false);
if (status < 0)
LOG_ERROR_STATUS(status);
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