From c2783f3a625b2aba943ef94623e277557a91a448 Mon Sep 17 00:00:00 2001 From: Dave Kleikamp Date: Mon, 25 Jul 2005 08:58:54 -0500 Subject: [PATCH] JFS: Don't set log_SYNCBARRIER when log->active == 0 If a metadata page is kept active, it is possible that the sync barrier logic continues to trigger, even if all active transactions have been phyically written to the journal. This can cause a hang, since the completion of the journal I/O is what unsets the sync barrier flag to allow new transactions to be created. Signed-off-by: Dave Kleikamp --- fs/jfs/jfs_logmgr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 79d07624bfe1..22815e88e7cc 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1030,7 +1030,8 @@ static int lmLogSync(struct jfs_log * log, int nosyncwait) * starting until all current transactions are completed * by setting syncbarrier flag. */ - if (written > LOGSYNC_BARRIER(logsize) && logsize > 32 * LOGPSIZE) { + if (!test_bit(log_SYNCBARRIER, &log->flag) && + (written > LOGSYNC_BARRIER(logsize)) && log->active) { set_bit(log_SYNCBARRIER, &log->flag); jfs_info("log barrier on: lsn=0x%x syncpt=0x%x", lsn, log->syncpt);