From 3537581a722402a1e6f0942cd0653035a9e09e21 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Sat, 5 Aug 2017 14:25:08 -0700 Subject: [PATCH] f2fs: use IPU for cold files We expect cold files write data sequentially, but sometimes some of small data can be updated, which incurs fragmentation. Let's avoid that. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 6b871b4..7f700e5 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)) -- 2.7.4