[PATCH 2/3] btrfs: cache RAID stripe tree decission in btrfs_io_context

[Johannes Thumshirn]

From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>

Cache the decission if a particular I/O needs to update RAID stripe tree
entries in struct btrfs_io_context.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
---
 fs/btrfs/bio.c     | 3 +--
 fs/btrfs/volumes.c | 1 +
 fs/btrfs/volumes.h | 2 ++
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c
index 7ea6f0b43b95072b380172dc16e3c0de208a952b..bc80ee4f95a5a8de05f2664f68ac4fcb62864d7b 100644
--- a/fs/btrfs/bio.c
+++ b/fs/btrfs/bio.c
@@ -725,8 +725,7 @@ static bool btrfs_submit_chunk(struct btrfs_bio *bbio, int mirror_num)
 			bio->bi_opf |= REQ_OP_ZONE_APPEND;
 		}
 
-		if (is_data_bbio(bbio) && bioc &&
-		    btrfs_need_stripe_tree_update(bioc->fs_info, bioc->map_type)) {
+		if (is_data_bbio(bbio) && bioc && bioc->use_rst) {
 			/*
 			 * No locking for the list update, as we only add to
 			 * the list in the I/O submission path, and list
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index fa190f7108545eacf82ef2b5f1f3838d56ca683e..088ba0499e184c93a402a3f92167cccfa33eec58 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6663,6 +6663,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		goto out;
 	}
 	bioc->map_type = map->type;
+	bioc->use_rst = io_geom.use_rst;
 
 	/*
 	 * For RAID56 full map, we need to make sure the stripes[] follows the
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 3a416b1bc24cb0735c783de90fb7490d795d7d96..0a00ee36f66b6d6831c43abda4a791684c11ea02 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -490,6 +490,8 @@ struct btrfs_io_context {
 	u64 size;
 	/* Raid stripe tree ordered entry. */
 	struct list_head rst_ordered_entry;
+	/* This I/O operation uses the RAID stripe tree */
+	bool use_rst;
 
 	/*
 	 * The total number of stripes, including the extra duplicated

-- 
2.43.0