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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-02-04 10:11:17 +0400 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-02-12 02:15:02 +0400 |
| commit | 437275272f9e635673f065300e5d95226a25cb06 (patch) | |
| tree | bb0b8945d70971c200d098106b8879c1f84e109a /fs/f2fs/segment.h | |
| parent | b1f1daf8c72d615b64163e26488d8effeed29b60 (diff) | |
| download | linux-437275272f9e635673f065300e5d95226a25cb06.tar.xz | |
f2fs: clarify and enhance the f2fs_gc flow
This patch makes clearer the ambiguous f2fs_gc flow as follows.
1. Remove intermediate checkpoint condition during f2fs_gc
(i.e., should_do_checkpoint() and GC_BLOCKED)
2. Remove unnecessary return values of f2fs_gc because of #1.
(i.e., GC_NODE, GC_OK, etc)
3. Simplify write_checkpoint() because of #2.
4. Clarify the main f2fs_gc flow.
o monitor how many freed sections during one iteration of do_garbage_collect().
o do GC more without checkpoints if we can't get enough free sections.
o do checkpoint once we've got enough free sections through forground GCs.
5. Adopt thread-logging (Slack-Space-Recycle) scheme more aggressively on data
log types. See. get_ssr_segement()
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 458bf5c726f7..552dadbb2327 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -450,21 +450,15 @@ static inline bool need_SSR(struct f2fs_sb_info *sbi) return (free_sections(sbi) < overprovision_sections(sbi)); } -static inline int get_ssr_segment(struct f2fs_sb_info *sbi, int type) -{ - struct curseg_info *curseg = CURSEG_I(sbi, type); - return DIRTY_I(sbi)->v_ops->get_victim(sbi, - &(curseg)->next_segno, BG_GC, type, SSR); -} - -static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi) +static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed) { int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); + if (sbi->por_doing) return false; - return (free_sections(sbi) <= (node_secs + 2 * dent_secs + + return ((free_sections(sbi) + freed) <= (node_secs + 2 * dent_secs + reserved_sections(sbi))); } |