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 1/2] f2fs: use IPU for cold files
Date: Mon, 7 Aug 2017 18:42:21 -0700 [thread overview]
Message-ID: <20170808014222.31097-1-jaegeuk@kernel.org> (raw)
We expect cold files write data sequentially, but sometimes some of small data
can be updated, which incurs fragmentation.
Let's avoid that.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/segment.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 6b871b492fd5..7f700e54b77d 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -577,6 +577,10 @@ static inline bool need_inplace_update_policy(struct inode *inode,
if (test_opt(sbi, LFS))
return false;
+ /* if this is cold file, we should overwrite to avoid fragmentation */
+ if (file_is_cold(inode))
+ return true;
+
if (policy & (0x1 << F2FS_IPU_FORCE))
return true;
if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi))
--
2.13.0.rc1.294.g07d810a77f-goog
next reply other threads:[~2017-08-08 1:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-08 1:42 Jaegeuk Kim [this message]
2017-08-08 1:42 ` [PATCH 2/2] f2fs: introduce gc_urgent mode for background GC Jaegeuk Kim
2017-08-08 3:09 ` [PATCH 2/2 v2] " Jaegeuk Kim
2017-08-08 3:15 ` [PATCH 2/2] " Chao Yu
2017-08-08 3:40 ` Jaegeuk Kim
2017-08-10 10:44 ` Chao Yu
2017-08-08 2:57 ` [PATCH 1/2] f2fs: use IPU for cold files Chao Yu
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