From bbaf549e0c3d28399fc5abd68020d4025ae5c3a7 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Thu, 8 May 2008 16:31:21 -0400 Subject: Btrfs: A number of nodatacow fixes Once part of a delalloc request fails the cow checks, just cow the entire range It is possible for the back references to all be from the same root, but still have snapshots against an extent. The checks are now more strict, forcing cow any time there are multiple refs against the data extent. Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'fs/btrfs/inode.c') diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1bf37d1..a492fd2 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -207,9 +207,8 @@ again: btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); found_type = btrfs_key_type(&found_key); if (found_key.objectid != inode->i_ino || - found_type != BTRFS_EXTENT_DATA_KEY) { + found_type != BTRFS_EXTENT_DATA_KEY) goto not_found; - } found_type = btrfs_file_extent_type(leaf, item); extent_start = found_key.offset; @@ -245,7 +244,6 @@ again: if (!block_group || block_group->ro) goto not_found; - start = extent_end; } else { goto not_found; @@ -260,8 +258,8 @@ loop: goto again; not_found: - cow_file_range(inode, start, cow_end); - start = cow_end + 1; + cow_file_range(inode, start, end); + start = end + 1; goto loop; } -- cgit v1.1