Hi, block_dump is an old debugging interface and can be replaced by tracepoints, and we also found a deadlock issue relate to it[1]. As Jan suggested, this patch set delete the whole block_dump feature, we can use tracepoints to get the similar information. If someone still using this feature cannot switch to use tracepoints or any other suggestions, please let us know. Thanks, Yi. [1]. https://lore.kernel.org/linux-fsdevel/20210305132442.GA2801131@xxxxxxxxxxxxx/T/#m385b0f84bc381d3089740e33d94f6e1b67dd06d2 zhangyi (F) (3): block_dump: remove block_dump feature in mark_inode_dirty() block_dump: remove block_dump feature block_dump: remove comments in docs .../admin-guide/laptops/laptop-mode.rst | 11 -------- Documentation/admin-guide/sysctl/vm.rst | 8 ------ block/blk-core.c | 9 ------- fs/fs-writeback.c | 25 ------------------- include/linux/writeback.h | 1 - kernel/sysctl.c | 8 ------ mm/page-writeback.c | 5 ---- 7 files changed, 67 deletions(-) -- 2.25.4