fs-inode_lock-scale-6

Add a new lock, wb_inode_list_lock, to protect i_list and various lists
which the inode can be put onto.

XXX: haven't audited ocfs2

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 5b9178fbb261..90ad0abb935f 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -11,6 +11,7 @@ struct backing_dev_info;
 
 extern spinlock_t inode_lock;
 extern spinlock_t sb_inode_list_lock;
+extern spinlock_t wb_inode_list_lock;
 extern spinlock_t inode_hash_lock;
 extern struct list_head inode_in_use;
 extern struct list_head inode_unused;