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authorChao Yu <yuchao0@huawei.com>2020-08-04 21:14:45 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2020-09-10 14:03:30 -0700
commitd0b9e42ab6155dc05fc83f00af9f45d4dd02264d (patch)
treedd8440fcfc93b9cf49c36ea52b4822d57ba9b613 /fs/f2fs/checkpoint.c
parent376207af4bf809a48bea79fc1970a17e048c734e (diff)
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>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
-rw-r--r--fs/f2fs/checkpoint.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index ff807e14c891..9e30ff6414b8 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -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;
}