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-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 188cbbd5b74a..4663f7dbff1c 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1295,6 +1295,11 @@ _pagebuf_ioapply(
rw = (pb->pb_flags & PBF_READ) ? READ : WRITE;
}
+ if (pb->pb_flags & PBF_ORDERED) {
+ ASSERT(!(pb->pb_flags & PBF_READ));
+ rw = WRITE_BARRIER;
+ }
+
/* Special code path for reading a sub page size pagebuf in --
* we populate up the whole page, and hence the other metadata
* in the same page. This optimization is only valid when the