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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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3
fs/f2fs/file.c
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@@ -81,7 +81,8 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma,
zero_user_segment(page, offset, PAGE_SIZE);
}
set_page_dirty(page);
SetPageUptodate(page);
if (!PageUptodate(page))
SetPageUptodate(page);
trace_f2fs_vm_page_mkwrite(page, DATA);
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