Btrfs: Add data=ordered support
This forces file data extents down the disk along with the metadata that
references them. The current implementation is fairly simple, and just
writes out all of the dirty pages in an inode before the commit.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c906bb1..68137cd 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1195,7 +1195,9 @@
if (btrfs_buffer_uptodate(buf)) {
u64 transid =
root->fs_info->running_transaction->transid;
- if (btrfs_header_generation(buf) == transid) {
+ u64 header_transid =
+ btrfs_header_generation(buf);
+ if (header_transid == transid) {
free_extent_buffer(buf);
return 1;
}