f2fs: refactor bio-related operations
This patch integrates redundant bio operations on read and write IOs.
1. Move bio-related codes to the top of data.c.
2. Replace f2fs_submit_bio with f2fs_submit_merged_bio, which handles read
bios additionally.
3. Introduce __submit_merged_bio to submit the merged bio.
4. Change f2fs_readpage to f2fs_submit_page_bio.
5. Introduce f2fs_submit_page_mbio to integrate previous submit_read_page and
submit_write_page.
Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com >
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 5fa54c1..2886aef 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -631,7 +631,7 @@
goto next_step;
if (gc_type == FG_GC) {
- f2fs_submit_bio(sbi, DATA, true);
+ f2fs_submit_merged_bio(sbi, DATA, true, WRITE);
/*
* In the case of FG_GC, it'd be better to reclaim this victim