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-rw-r--r--fs/jbd/commit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index dba9cfd..1b27f46 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -308,7 +308,9 @@ void journal_commit_transaction(journal_t *journal)
/* Do we need to erase the effects of a prior journal_flush? */
if (journal->j_flags & JFS_FLUSHED) {
jbd_debug(3, "super block updated\n");
+ mutex_lock(&journal->j_checkpoint_mutex);
journal_update_sb_log_tail(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
} else {
jbd_debug(3, "superblock not updated\n");
}
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