tree 9d5a10993ce88b21141911f4cc76deee3b3fd84d
parent f099405fc8d6c837487dcd6ab288073a44e6a91f
author Chao Yu <yuchao0@huawei.com> 1490696330 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1491415504 -0700

f2fs: use bitmap in discard_entry

This patch changes to use bitmap instead of extent in struct discard_entry
to indicate discard range in one segment, for fragmented space, this
implementation can save memory footprint.

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