f2fs: introduce lifetime write IO statistics

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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>

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Shuoran Liu 2016-01-27 09:57:30 +08:00 • committed by Jaegeuk Kim

parent 6fe2bc9561

commit 8f1dbbbbdf

5 changed files with 78 additions and 3 deletions

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14

include/linux/f2fs_fs.h

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