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Chao Yu authored
Previous implementation of aligned pinfile allocation will: - allocate new segment on cold data log no matter whether last used segment is partially used or not, it makes IOs more random; - force concurrent cold data/GCed IO going into warm data area, it can make a bad effect on hot/cold data separation; In this patch, we introduce a new type of log named 'inmem curseg', the differents from normal curseg is: - it reuses existed segment type (CURSEG_XXX_NODE/DATA); - it only exists in memory, its segno, blkofs, summary will not b persisted into checkpoint area; With this new feature, we can enhance scalability of log, special allocators can be created for purposes: - pure lfs allocator for aligned pinfile allocation or file defragmentation - pure ssr allocator for later feature So that, let's update aligned pinfile allocation to use this new inmem curseg fwk. Signed-off-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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