f2fs: optimize do_write_data_page()

Since "need_inplace_update() == true" is a very rare case, using unlikely()
to give compiler a chance to optimize the code.

Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 5b145fcc2864..6d4a743caf86 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -497,8 +497,9 @@ int do_write_data_page(struct page *page)
          * If current allocation needs SSR,
          * it had better in-place writes for updated data.
          */
-        if (old_blk_addr != NEW_ADDR && !is_cold_data(page) &&
-                                need_inplace_update(inode)) {
+        if (unlikely(old_blk_addr != NEW_ADDR &&
+                        !is_cold_data(page) &&
+                        need_inplace_update(inode))) {
                 rewrite_data_page(F2FS_SB(inode->i_sb), page,
                                                 old_blk_addr);
         } else {