On Tue, Aug 03, 2010 at 12:01:54PM -0400, Theodore Ts'o wrote: > Lockstat reports have shown that j_state_lock is a major source of > lock contention, especially on systems with more than 4 CPU cores. So > change it to be a read/write spinlock. > > Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx> Oops, this patch can result in a BUG_ON in fs/jbd2/transaction.c. I'm currently testing a fix/replacement patch, but I figured I send a quick warning to folks not to waste time trying this out just yet. I should hopefully have a new, better-tested patch in by tomorrow morning. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
