f2fs: add REQ_META about metadata requests for submit

Adding REQ_META for all the metadata requests can help in improving the
FS performance, if the underlying device supports TAGGING.
So, when considering the submit_bio path for all the f2fs requests. We can
add REQ_META for all the META requests.
As a precursor to this change we considered the commit
4265900e0be653f5b78baf2816857ef57cf1332f 'mmc: MMC-4.5 Data Tag Support'

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 0a65284..392ccb3 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -688,6 +688,9 @@ static void do_submit_bio(struct f2fs_sb_info *sbi,
        if (type >= META_FLUSH)
                rw = WRITE_FLUSH_FUA;
 
+       if (btype == META)
+               rw |= REQ_META;
+
        if (sbi->bio[btype]) {
                struct bio_private *p = sbi->bio[btype]->bi_private;
                p->sbi = sbi;