tree 662ba33d4d48cf7704f4adf43c6e805f12b22951
parent d40d30c5aa5227546030d3d7b0a6a38c6c85933a
author Chao Yu <yuchao0@huawei.com> 1492183495 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1492624840 -0700

f2fs: use rb-tree to track pending discard commands

Introduce rb-tree based discard cache infrastructure to speed up lookup and
merge operation of discard entry.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: initialize dc to avoid build warning]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>