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![Shuoran Liu](https://secure.gravatar.com/avatar/ddd10e8e8f75d617924cfa9ac01e1c92.jpg?s=96&d=mm)
Shuoran Liu committed 8f1dbbbbdfe
f2fs: introduce lifetime write IO statistics This patch introduces lifetime IO write statistics exposed to the sysfs interface. The write IO amount is obtained from block layer, accumulated in the file system and stored in the hot node summary of checkpoint. Signed-off-by: Shuoran Liu <liushuoran@huawei.com> Signed-off-by: Pengyang Hou <houpengyang@huawei.com> [Jaegeuk Kim: add sysfs documentation] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>