[PATCH v2 1/2] btrfs: tag tree block repair writes with REQ_META

[Mark Korenberg via B4 Relay <devnull+socketpair.gmail.com@kernel.org>]

From: Mark Korenberg <socketpair@gmail.com>

When a tree block read finds a bad copy, btrfs_repair_eb_io_failure()
rewrites it from a good one through btrfs_repair_bbio_failure().  That
rewrite is a plain REQ_OP_WRITE | REQ_SYNC, while the read that found
the bad copy and all other tree block writes carry REQ_META.

Tag it with REQ_META when the bbio belongs to the btree inode.

Signed-off-by: Mark Korenberg <socketpair@gmail.com>
---
 fs/btrfs/bio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c
index 2e12a6d7e16f..efbce4d549ff 100644
--- a/fs/btrfs/bio.c
+++ b/fs/btrfs/bio.c
@@ -951,7 +951,8 @@ int btrfs_repair_bbio_failure(struct btrfs_bio *bbio, const struct bvec_iter *or
 	}
 
 	repair_bio = bio_alloc(smap.dev->bdev, max(1, length >> PAGE_SHIFT),
-			       REQ_OP_WRITE | REQ_SYNC, GFP_NOFS);
+			       REQ_OP_WRITE | REQ_SYNC |
+			       (is_data_inode(inode) ? 0 : REQ_META), GFP_NOFS);
 	repair_bio->bi_iter.bi_sector = smap.physical >> SECTOR_SHIFT;
 	while (cur < length) {
 		struct page *page = bio_iter_page(&bbio->bio, iter);

-- 
2.56.0