Signed-off-by: Jan Kara <jack@xxxxxxx>
---
fs/jbd2/journal.c | 4 ++++
fs/jbd2/transaction.c | 4 ++++
include/linux/buffer_head.h | 4 ++++
3 files changed, 12 insertions(+)
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 02c7ad9..227a1ab 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2433,6 +2433,8 @@ repeat:
bh->b_private = jh;
jh->b_bh = bh;
get_bh(bh);
+ bh->added_from = _RET_IP_;
+ bh->added_jiffies = jiffies;
BUFFER_TRACE(bh, "added journal_head");
}
jh->b_jcount++;
@@ -2498,6 +2500,8 @@ void jbd2_journal_put_journal_head(struct journal_head *jh)
--jh->b_jcount;
if (!jh->b_jcount) {
__journal_remove_journal_head(bh);
+ bh->removed_from = _RET_IP_;
+ bh->removed_jiffies = jiffies;
jbd_unlock_bh_journal_head(bh);
__brelse(bh);
} else
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 7aa9a32..aacd1cd 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1275,6 +1275,10 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
journal = transaction->t_journal;
jh = jbd2_journal_grab_journal_head(bh);
if (!jh) {
+ printk(KERN_ERR "Dirtying buffer without jh at %lu: state %lx,"
+ "jh added from 0x%lx at %lu, removed from 0x%lx "
+ "at %lu\n", jiffies, bh->b_state, bh->removed_from,
+ bh->removed_jiffies, bh->added_from, bh->added_jiffies);
ret = -EUCLEAN;
goto out;
}
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 91fa9a9..f24073e 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -74,6 +74,10 @@ struct buffer_head {
struct address_space *b_assoc_map; /* mapping this buffer is
associated with */
atomic_t b_count; /* users using this buffer_head */
+ unsigned long removed_from;
+ unsigned long removed_jiffies;
+ unsigned long added_from;
+ unsigned long added_jiffies;
};
/*
--
1.8.1.4
--FL5UXtIhxfXey3p5--
--
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