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f2fs: call SetPageUptodate if needed

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SetPageUptodate() issues memory barrier, resulting in performance degrdation.
Let's avoid that.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-06-30 18:49:15 -07:00
parent fe76b796fc
commit 237c0790e5
5 changed files with 30 additions and 15 deletions
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9
fs/f2fs/node.c
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@@ -1045,7 +1045,8 @@ struct page *new_node_page(struct dnode_of_data *dn,
f2fs_wait_on_page_writeback(page, NODE, true);
fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
set_cold_node(dn->inode, page);
SetPageUptodate(page);
if (!PageUptodate(page))
SetPageUptodate(page);
if (set_page_dirty(page))
dn->node_changed = true;
@@ -1644,7 +1645,8 @@ static int f2fs_set_node_page_dirty(struct page *page)
{
trace_f2fs_set_page_dirty(page, NODE);
SetPageUptodate(page);
if (!PageUptodate(page))
SetPageUptodate(page);
if (!PageDirty(page)) {
f2fs_set_page_dirty_nobuffers(page);
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
@@ -2015,7 +2017,8 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
/* Should not use this inode from free nid list */
remove_free_nid(NM_I(sbi), ino);
SetPageUptodate(ipage);
if (!PageUptodate(ipage))
SetPageUptodate(ipage);
fill_node_footer(ipage, ino, ino, 0, true);
src = F2FS_INODE(page);