tree b220f05ab079e37343b841d368a58916388149ab
parent 17cd07ae95073c298af92c1ba14ac58ce84de33b
author Chao Yu <yuchao0@huawei.com> 1519653853 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1520895948 +0900

f2fs: expose extension_list sysfs entry

This patch adds a sysfs entry 'extension_list' to support
query/add/del item in extension list.

Query:
cat /sys/fs/f2fs/<device>/extension_list

Add:
echo 'extension' > /sys/fs/f2fs/<device>/extension_list

Del:
echo '!extension' > /sys/fs/f2fs/<device>/extension_list

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>