f2fs: use rb-tree to track pending discard commands

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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>

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Chao Yu 2017-04-14 23:24:55 +08:00 • committed by Jaegeuk Kim

parent d40d30c5aa

commit 004b686218

3 changed files with 236 additions and 50 deletions

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15

fs/f2fs/extent_cache.c

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48

fs/f2fs/f2fs.h

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227

fs/f2fs/segment.c

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