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f2fs: refactor bio-related operations

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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>
This commit is contained in:
Jaegeuk Kim
2013-11-30 12:51:14 +09:00
parent 187b5b8b3d
commit 93dfe2ac51
8 changed files with 257 additions and 299 deletions
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14
fs/f2fs/checkpoint.c
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@@ -61,7 +61,8 @@ repeat:
if (PageUptodate(page))
goto out;
if (f2fs_readpage(sbi, page, index, READ_SYNC | REQ_META | REQ_PRIO))
if (f2fs_submit_page_bio(sbi, page, index,
READ_SYNC | REQ_META | REQ_PRIO))
goto repeat;
lock_page(page);
@@ -157,7 +158,8 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
}
if (nwritten)
f2fs_submit_bio(sbi, type, nr_to_write == LONG_MAX);
f2fs_submit_merged_bio(sbi, type, nr_to_write == LONG_MAX,
WRITE);
return nwritten;
}
@@ -590,7 +592,7 @@ retry:
* We should submit bio, since it exists several
* wribacking dentry pages in the freeing inode.
*/
f2fs_submit_bio(sbi, DATA, true);
f2fs_submit_merged_bio(sbi, DATA, true, WRITE);
}
goto retry;
}
@@ -796,9 +798,9 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops");
f2fs_submit_bio(sbi, DATA, true);
f2fs_submit_bio(sbi, NODE, true);
f2fs_submit_bio(sbi, META, true);
f2fs_submit_merged_bio(sbi, DATA, true, WRITE);
f2fs_submit_merged_bio(sbi, NODE, true, WRITE);
f2fs_submit_merged_bio(sbi, META, true, WRITE);
/*
* update checkpoint pack index