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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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6
fs/f2fs/checkpoint.c
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@@ -48,7 +48,8 @@ repeat:
goto repeat;
}
f2fs_wait_on_page_writeback(page, META, true);
SetPageUptodate(page);
if (!PageUptodate(page))
SetPageUptodate(page);
return page;
}
@@ -364,7 +365,8 @@ static int f2fs_set_meta_page_dirty(struct page *page)
{
trace_f2fs_set_page_dirty(page, META);
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_META);