Josef Bacik
2013-Nov-14 02:13 UTC
[PATCH] Btrfs: fix check-integrity to look at the referenced data properly
We were looking at file_extent_num_bytes unconditionally when looking at
referenced data bytes, but this isn''t correct for compression. Fix
this by
checking the compression of the file extent we are and setting num_bytes to
disk_num_bytes in the case of compression so that we are marking the proper
bytes as referenced. This fixes check_int_data freaking out when running
btrfs/004. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
fs/btrfs/check-integrity.c | 12 ++++++++----
fs/btrfs/ctree.h | 4 ++++
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index e0aab44..b6eac53 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -1447,10 +1447,14 @@ static int btrfsic_handle_extent_data(
btrfsic_read_from_block_data(block_ctx, &file_extent_item,
file_extent_item_offset,
sizeof(struct btrfs_file_extent_item));
- next_bytenr = btrfs_stack_file_extent_disk_bytenr(&file_extent_item) +
- btrfs_stack_file_extent_offset(&file_extent_item);
- generation = btrfs_stack_file_extent_generation(&file_extent_item);
- num_bytes = btrfs_stack_file_extent_num_bytes(&file_extent_item);
+ next_bytenr = btrfs_stack_file_extent_disk_bytenr(&file_extent_item);
+ if (btrfs_stack_file_extent_compression(&file_extent_item) =+
BTRFS_COMPRESS_NONE) {
+ next_bytenr += btrfs_stack_file_extent_offset(&file_extent_item);
+ num_bytes = btrfs_stack_file_extent_num_bytes(&file_extent_item);
+ } else {
+ num_bytes = btrfs_stack_file_extent_disk_num_bytes(&file_extent_item);
+ }
generation = btrfs_stack_file_extent_generation(&file_extent_item);
if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index b6a137a..8ff6387 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2927,6 +2927,10 @@ BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
struct btrfs_file_extent_item, generation, 64);
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
struct btrfs_file_extent_item, num_bytes, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
+ struct btrfs_file_extent_item, disk_num_bytes, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
+ struct btrfs_file_extent_item, compression, 8);
static inline unsigned long
btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e)
--
1.8.3.1
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