Merge rsync://www.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6] / include / linux / buffer_head.h

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 802c91e9b3da8b19c91f0a16c774a9bee342acee..90828493791f1d996ed3dc5e39c43219daf747e1 100644 (file)
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -19,6 +19,9 @@ enum bh_state_bits {
        BH_Dirty,       /* Is dirty */
        BH_Lock,        /* Is locked */
        BH_Req,         /* Has been submitted for I/O */
+       BH_Uptodate_Lock,/* Used by the first bh in a page, to serialise
+                         * IO completion of other buffers in the page
+                         */
 
        BH_Mapped,      /* Has a disk mapping */
        BH_New,         /* Disk mapping was newly created by get_block */