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From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Chao Yu <yuchao0@huawei.com>
Cc: linux-f2fs-devel@lists.sourceforge.net,
	linux-kernel@vger.kernel.org, chao@kernel.org
Subject: Re: [PATCH 2/5] f2fs: force compressed data into warm area
Date: Tue, 10 Mar 2020 09:32:39 -0700	[thread overview]
Message-ID: <20200310163239.GC240315@google.com> (raw)
In-Reply-To: <20200310125009.12966-2-yuchao0@huawei.com>

On 03/10, Chao Yu wrote:
> Generally, data shows better continuity in warm data area as its
> default allocation direction is right, in order to enhance
> sequential read/write performance of compress inode, let's force
> compress data into warm area.

Not quite sure tho, compressed blocks are logically cold, no?

> 
> Signed-off-by: Chao Yu <yuchao0@huawei.com>
> ---
>  fs/f2fs/segment.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 601d67e72c50..ab1bc750712a 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -3037,9 +3037,10 @@ static int __get_segment_type_6(struct f2fs_io_info *fio)
>  	if (fio->type == DATA) {
>  		struct inode *inode = fio->page->mapping->host;
>  
> -		if (is_cold_data(fio->page) || file_is_cold(inode) ||
> -				f2fs_compressed_file(inode))
> +		if (is_cold_data(fio->page) || file_is_cold(inode))
>  			return CURSEG_COLD_DATA;
> +		if (f2fs_compressed_file(inode))
> +			return CURSEG_WARM_DATA;
>  		if (file_is_hot(inode) ||
>  				is_inode_flag_set(inode, FI_HOT_DATA) ||
>  				f2fs_is_atomic_file(inode) ||
> -- 
> 2.18.0.rc1

  reply	other threads:[~2020-03-10 16:32 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-10 12:50 [PATCH 1/5] f2fs: change default compression algorithm Chao Yu
2020-03-10 12:50 ` [PATCH 2/5] f2fs: force compressed data into warm area Chao Yu
2020-03-10 16:32   ` Jaegeuk Kim [this message]
2020-03-11  3:45     ` Chao Yu
2020-03-10 12:50 ` [PATCH 3/5] f2fs: fix to account compressed inode correctly Chao Yu
2020-03-10 12:50 ` [PATCH 4/5] f2fs: fix to check dirty pages during compressed inode conversion Chao Yu
2020-03-10 12:50 ` [PATCH 5/5] f2fs: allow to clear F2FS_COMPR_FL flag Chao Yu
2020-03-10 16:15 ` [f2fs-dev] [PATCH 1/5] f2fs: change default compression algorithm Eric Biggers
2020-03-11  0:41   ` Chao Yu
2020-03-11  3:07     ` Jaegeuk Kim

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