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| author | Chao Yu | 2018-02-28 10:07:27 +0100 |
|---|---|---|
| committer | Jaegeuk Kim | 2018-03-13 00:05:57 +0100 |
| commit | b6a06cbbb5f7fd03589cff9178314af04c568826 (patch) | |
| tree | e9e782bd93dc91a35aeb9af8f74c7e82fb47b8bb /fs/f2fs/segment.c | |
| parent | f2fs: fix to avoid race in between atomic write and background GC (diff) | |
| download | kernel-qcow2-linux-b6a06cbbb5f7fd03589cff9178314af04c568826.tar.gz kernel-qcow2-linux-b6a06cbbb5f7fd03589cff9178314af04c568826.tar.xz kernel-qcow2-linux-b6a06cbbb5f7fd03589cff9178314af04c568826.zip | |
f2fs: support hot file extension
This patch supports to recognize hot file extension in f2fs, so that we
can allocate proper hot segment location for its data, which can lead to
better hot/cold seperation in filesystem.
In addition, we changes a bit on query/add/del operation method for
extension_list sysfs entry as below:
- Query: cat /sys/fs/f2fs/<disk>/extension_list
- Add: echo 'extension' > /sys/fs/f2fs/<disk>/extension_list
- Del: echo '!extension' > /sys/fs/f2fs/<disk>/extension_list
- Add: echo '[h/c]extension' > /sys/fs/f2fs/<disk>/extension_list
- Del: echo '[h/c]!extension' > /sys/fs/f2fs/<disk>/extension_list
- [h] means add/del hot file extension
- [c] means add/del cold file extension
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 1e3dd3de4ecc..f61c77bd673c 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2587,7 +2587,8 @@ static int __get_segment_type_6(struct f2fs_io_info *fio) if (is_cold_data(fio->page) || file_is_cold(inode)) return CURSEG_COLD_DATA; - if (is_inode_flag_set(inode, FI_HOT_DATA)) + if (file_is_hot(inode) || + is_inode_flag_set(inode, FI_HOT_DATA)) return CURSEG_HOT_DATA; return rw_hint_to_seg_type(inode->i_write_hint); } else { |