diff options
Diffstat (limited to 'net/disk_cache/sparse_control.cc')
| -rw-r--r-- | net/disk_cache/sparse_control.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/disk_cache/sparse_control.cc b/net/disk_cache/sparse_control.cc index 66096a2..d2e66d9 100644 --- a/net/disk_cache/sparse_control.cc +++ b/net/disk_cache/sparse_control.cc @@ -506,6 +506,13 @@ void SparseControl::UpdateRange(int result) { int last_bit = (child_offset_ + result) >> 10; block_offset = (child_offset_ + result) & (kBlockSize - 1); + // This condition will hit with the following criteria: + // 1. The first byte doesn't follow the last write. + // 2. The first byte is in the middle of a block. + // 3. The first byte and the last byte are in the same block. + if (first_bit > last_bit) + return; + if (block_offset && !child_map_.Get(last_bit)) { // The last block is not completely filled; save it for later. child_data_.header.last_block = last_bit; |