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| author | Chao Yu <yuchao0@huawei.com> | 2020-08-04 16:14:45 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-09-11 00:03:30 +0300 |
| commit | d0b9e42ab6155dc05fc83f00af9f45d4dd02264d (patch) | |
| tree | dd8440fcfc93b9cf49c36ea52b4822d57ba9b613 /fs/f2fs/debug.c | |
| parent | 376207af4bf809a48bea79fc1970a17e048c734e (diff) | |
| download | linux-d0b9e42ab6155dc05fc83f00af9f45d4dd02264d.tar.xz | |
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/debug.c')
| -rw-r--r-- | fs/f2fs/debug.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index 4276c0f79beb..41a91aa8c262 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -164,7 +164,7 @@ static void update_general_status(struct f2fs_sb_info *sbi) * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) / 2; si->util_invalid = 50 - si->util_free - si->util_valid; - for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) { + for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { struct curseg_info *curseg = CURSEG_I(sbi, i); si->curseg[i] = curseg->segno; si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); @@ -393,6 +393,10 @@ static int stat_show(struct seq_file *s, void *v) si->dirty_seg[CURSEG_COLD_NODE], si->full_seg[CURSEG_COLD_NODE], si->valid_blks[CURSEG_COLD_NODE]); + seq_printf(s, " - Pinned file: %8d %8d %8d\n", + si->curseg[CURSEG_COLD_DATA_PINNED], + si->cursec[CURSEG_COLD_DATA_PINNED], + si->curzone[CURSEG_COLD_DATA_PINNED]); seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", si->main_area_segs - si->dirty_count - si->prefree_count - si->free_segs, |