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So just pass NULL to skip the check and we don't need to set the generation before erasing the buffer. No functional change. See commit messages for details. Sun YangKai (2): btrfs: add comment for btrfs_clear_buffer_dirty btrfs: drop premature generation setting in btrfs_init_new_buffer() fs/btrfs/extent-tree.c | 6 ++---- fs/btrfs/extent_io.c | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+), 4 deletions(-) -- 2.51.2