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f2fs: write small sized IO to hot log

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It would better split small and large IOs separately in order to get more
consecutive big writes.

The default threshold is set to 64KB, but configurable by sysfs/min_hot_blocks.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2017-03-24 20:05:13 -04:00
parent a7eeb82385
commit ef095d19e8
6 changed files with 21 additions and 7 deletions
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13
fs/f2fs/segment.c
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@@ -1829,18 +1829,16 @@ static int __get_segment_type_6(struct page *page, enum page_type p_type)
if (p_type == DATA) {
struct inode *inode = page->mapping->host;
if (S_ISDIR(inode->i_mode))
return CURSEG_HOT_DATA;
else if (is_cold_data(page) || file_is_cold(inode))
if (is_cold_data(page) || file_is_cold(inode))
return CURSEG_COLD_DATA;
else
return CURSEG_WARM_DATA;
if (is_inode_flag_set(inode, FI_HOT_DATA))
return CURSEG_HOT_DATA;
return CURSEG_WARM_DATA;
} else {
if (IS_DNODE(page))
return is_cold_node(page) ? CURSEG_WARM_NODE :
CURSEG_HOT_NODE;
else
return CURSEG_COLD_NODE;
return CURSEG_COLD_NODE;
}
}
@@ -2947,6 +2945,7 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS;