f2fs: introduce inmem curseg
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>
This commit is contained in:
@@ -1619,11 +1619,16 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
|
||||
|
||||
f2fs_flush_sit_entries(sbi, cpc);
|
||||
|
||||
/* save inmem log status */
|
||||
f2fs_save_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
|
||||
|
||||
err = do_checkpoint(sbi, cpc);
|
||||
if (err)
|
||||
f2fs_release_discard_addrs(sbi);
|
||||
else
|
||||
f2fs_clear_prefree_segments(sbi, cpc);
|
||||
|
||||
f2fs_restore_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
|
||||
stop:
|
||||
unblock_operations(sbi);
|
||||
stat_inc_cp_count(sbi->stat_info);
|
||||
@@ -1654,7 +1659,7 @@ void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
|
||||
}
|
||||
|
||||
sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
|
||||
NR_CURSEG_TYPE - __cp_payload(sbi)) *
|
||||
NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
|
||||
F2FS_ORPHANS_PER_BLOCK;
|
||||
}
|
||||
|
||||
|
Reference in New Issue
Block a user