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f2fs: avoid multiple node page writes due to inline_data

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The sceanrio is:
1. create fully node blocks
2. flush node blocks
3. write inline_data for all the node blocks again
4. flush node blocks redundantly

So, this patch tries to flush inline_data when flushing node blocks.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-01-25 05:57:05 -08:00
parent 3c082b7b5b
commit 2049d4fcb0
5 changed files with 63 additions and 0 deletions
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41
fs/f2fs/node.c
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@@ -1154,6 +1154,39 @@ void sync_inode_page(struct dnode_of_data *dn)
dn->node_changed = ret ? true: false;
}
static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
{
struct inode *inode;
struct page *page;
/* should flush inline_data before evict_inode */
inode = ilookup(sbi->sb, ino);
if (!inode)
return;
page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
if (!page)
goto iput_out;
if (!PageUptodate(page))
goto page_out;
if (!PageDirty(page))
goto page_out;
if (!clear_page_dirty_for_io(page))
goto page_out;
if (!f2fs_write_inline_data(inode, page))
inode_dec_dirty_pages(inode);
else
set_page_dirty(page);
page_out:
f2fs_put_page(page, 1);
iput_out:
iput(inode);
}
int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
struct writeback_control *wbc)
{
@@ -1221,6 +1254,14 @@ continue_unlock:
goto continue_unlock;
}
/* flush inline_data */
if (!ino && is_inline_node(page)) {
clear_inline_node(page);
unlock_page(page);
flush_inline_data(sbi, ino_of_node(page));
continue;
}
if (!clear_page_dirty_for_io(page))
goto continue_unlock;