From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH 09/10] f2fs: avoid needless checkpoint in f2fs_trim_fs
Date: Fri, 30 Dec 2016 10:51:16 -0800 [thread overview]
Message-ID: <20161230185117.3832-9-jaegeuk@kernel.org> (raw)
In-Reply-To: <20161230185117.3832-1-jaegeuk@kernel.org>
The f2fs_trim_fs() doesn't need to do checkpoint if there are newly allocated
data blocks only which didn't change the critical checkpoint data such as nat
and sit entries.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/checkpoint.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 1a9ba69a22ba..917b5c5053ae 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1248,14 +1248,15 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_flush_merged_bios(sbi);
/* this is the case of multiple fstrims without any changes */
- if (cpc->reason == CP_DISCARD && !is_sbi_flag_set(sbi, SBI_IS_DIRTY)) {
- f2fs_bug_on(sbi, NM_I(sbi)->dirty_nat_cnt);
- f2fs_bug_on(sbi, SIT_I(sbi)->dirty_sentries);
- f2fs_bug_on(sbi, prefree_segments(sbi));
- flush_sit_entries(sbi, cpc);
- clear_prefree_segments(sbi, cpc);
- unblock_operations(sbi);
- goto out;
+ if (cpc->reason == CP_DISCARD) {
+ if (NM_I(sbi)->dirty_nat_cnt == 0 &&
+ SIT_I(sbi)->dirty_sentries == 0 &&
+ prefree_segments(sbi) == 0) {
+ flush_sit_entries(sbi, cpc);
+ clear_prefree_segments(sbi, cpc);
+ unblock_operations(sbi);
+ goto out;
+ }
}
/*
--
2.11.0
next prev parent reply other threads:[~2016-12-30 18:52 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-30 18:51 [PATCH 01/10] f2fs: reassign new segment for mode=lfs Jaegeuk Kim
2016-12-30 18:51 ` [PATCH 02/10] f2fs: fix wrong tracepoints for op and op_flags Jaegeuk Kim
2017-01-04 3:25 ` [f2fs-dev] " Chao Yu
2016-12-30 18:51 ` [PATCH 03/10] f2fs: add submit_bio tracepoint Jaegeuk Kim
2017-01-04 3:32 ` [f2fs-dev] " Chao Yu
2017-01-04 23:35 ` [PATCH 03/10 v2] " Jaegeuk Kim
2017-01-12 11:07 ` Chao Yu
2016-12-30 18:51 ` [PATCH 04/10] f2fs: support IO alignment for DATA and NODE writes Jaegeuk Kim
2017-01-04 8:23 ` [f2fs-dev] " Chao Yu
2017-01-04 23:44 ` Jaegeuk Kim
2017-01-12 11:15 ` Chao Yu
2016-12-30 18:51 ` [PATCH 05/10] f2fs: get io size bit from mount option Jaegeuk Kim
2016-12-30 18:51 ` [PATCH 06/10] f2fs: show the max number of atomic operations Jaegeuk Kim
2017-01-04 8:45 ` Chao Yu
2017-01-04 23:50 ` [PATCH 06/10 v2] " Jaegeuk Kim
2017-01-12 11:15 ` Chao Yu
2016-12-30 18:51 ` [PATCH 07/10] f2fs: don't allow encrypted operations without keys Jaegeuk Kim
2017-01-04 8:56 ` [f2fs-dev] " Chao Yu
2016-12-30 18:51 ` [PATCH 08/10] f2fs: relax async discard commands more Jaegeuk Kim
2017-01-04 9:29 ` [f2fs-dev] " Chao Yu
2017-01-05 3:19 ` Chao Yu
2017-01-05 8:17 ` Chao Yu
2017-01-05 19:59 ` Jaegeuk Kim
2017-01-05 19:46 ` Jaegeuk Kim
2017-01-06 2:06 ` Chao Yu
2017-01-06 2:42 ` Jaegeuk Kim
2017-01-06 3:32 ` Chao Yu
2017-02-22 7:23 ` Chao Yu
2017-02-22 21:15 ` Jaegeuk Kim
2017-02-23 2:08 ` Chao Yu
2017-02-23 2:42 ` Jaegeuk Kim
2016-12-30 18:51 ` Jaegeuk Kim [this message]
2017-02-22 7:23 ` [f2fs-dev] [PATCH 09/10] f2fs: avoid needless checkpoint in f2fs_trim_fs Chao Yu
2016-12-30 18:51 ` [PATCH 10/10] f2fs: return fs_trim if there is no candidate Jaegeuk Kim
2017-02-22 7:23 ` [f2fs-dev] " Chao Yu
2017-02-22 21:26 ` Jaegeuk Kim
2017-02-23 2:12 ` Chao Yu
2017-02-23 2:47 ` Jaegeuk Kim
2017-01-04 3:24 ` [f2fs-dev] [PATCH 01/10] f2fs: reassign new segment for mode=lfs Chao Yu
2017-01-04 22:48 ` Jaegeuk Kim
2017-01-12 11:03 ` Chao Yu
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