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authorJosef Bacik <jbacik@fusionio.com>2012-12-03 10:31:19 -0500
committerChris Mason <chris.mason@fusionio.com>2012-12-16 20:46:23 -0500
commitb493968096944a11422c4d80fb87af537ca1cac7 (patch)
treee1ab00ec2a527615c2f17c2665e6597fc3b81c7d /fs/btrfs/extent_map.h
parentb812ce28796f746f14ba6cc451250c422db447b2 (diff)
Btrfs: keep track of the extents original block length
If we've written to a prealloc extent we need to know the original block len for the extent. We can't figure this out currently since ->block_len is just set to the extent length. So introduce ->orig_block_len so that we know how many bytes were in the original extent for proper extent logging that future patches will need. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
-rw-r--r--fs/btrfs/extent_map.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index 679225555f7..99a0dcb5ba2 100644
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -24,6 +24,7 @@ struct extent_map {
u64 mod_start;
u64 mod_len;
u64 orig_start;
+ u64 orig_block_len;
u64 block_start;
u64 block_len;
u64 generation;