f2fs: use bitmap in discard_entry

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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>

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Chao Yu 2017-03-28 18:18:50 +08:00 • committed by Jaegeuk Kim

parent f099405fc8

commit a7eeb82385

2 changed files with 43 additions and 35 deletions

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6

fs/f2fs/f2fs.h

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72

fs/f2fs/segment.c

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