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authorJosef Bacik <jbacik@fusionio.com>2013-10-14 17:23:08 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-20 07:49:08 -0800
commit63e431def463a8c620d1b03c77d440c6903917d1 (patch)
treecbdd599b24cac6fb1bd138ef22663f7e458a649a
parent4ae8656075c351ba3a3aefc923550ef2b7280164 (diff)
Btrfs: fix hole check in log_one_extent
commit ed9e8af88e2551aaa6bf51d8063a2493e2d71597 upstream. I added an assert to make sure we were looking up aligned offsets for csums and I tripped it when running xfstests. This is because log_one_extent was checking if block_start == 0 for a hole instead of EXTENT_MAP_HOLE. This worked out fine in practice it seems, but it adds a lot of extra work that is uneeded. With this fix I'm no longer tripping my assert. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/btrfs/tree-log.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 79f057c0619..e14e1f7748e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -3375,7 +3375,7 @@ static int log_one_extent(struct btrfs_trans_handle *trans,
btrfs_set_token_file_extent_type(leaf, fi,
BTRFS_FILE_EXTENT_REG,
&token);
- if (em->block_start == 0)
+ if (em->block_start == EXTENT_MAP_HOLE)
skip_csum = true;
}