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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 <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2017-08-05 14:25:08 -07:00
parent 008396e1b0
commit 3537581a72
1 changed files with 4 additions and 0 deletions
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4
fs/f2fs/segment.h
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@ -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))