[PATCH 3/8] btrfs: convert btrfs_inc_block_group_ro to accept fs_info

[jeffm]

From: Jeff Mahoney <je...@suse.com>

btrfs_inc_block_group_ro is either passed the extent root or the dev
root, but it doesn't do anything with the dev tree.  Let's convert
to passing an fs_info and using the extent root.

Signed-off-by: Jeff Mahoney <je...@suse.com>
---
 fs/btrfs/ctree.h       | 2 +-
 fs/btrfs/extent-tree.c | 5 ++---
 fs/btrfs/relocation.c  | 2 +-
 fs/btrfs/scrub.c       | 2 +-
 4 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6a82371..49f520c 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2724,7 +2724,7 @@ int btrfs_cond_migrate_bytes(struct btrfs_fs_info 
*fs_info,
 void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
                             struct btrfs_block_rsv *block_rsv,
                             u64 num_bytes);
-int btrfs_inc_block_group_ro(struct btrfs_root *root,
+int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info,
                             struct btrfs_block_group_cache *cache);
 void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache);
 void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index b005378..20bedc7 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -9363,17 +9363,16 @@ static int inc_block_group_ro(struct 
btrfs_block_group_cache *cache, int force)
        return ret;
 }
 
-int btrfs_inc_block_group_ro(struct btrfs_root *root,
+int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info,
                             struct btrfs_block_group_cache *cache)
 
 {
-       struct btrfs_fs_info *fs_info = root->fs_info;
        struct btrfs_trans_handle *trans;
        u64 alloc_flags;
        int ret;
 
 again:
-       trans = btrfs_join_transaction(root);
+       trans = btrfs_join_transaction(fs_info->extent_root);
        if (IS_ERR(trans))
                return PTR_ERR(trans);
 
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 3797110..2e9deb9 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4334,7 +4334,7 @@ int btrfs_relocate_block_group(struct btrfs_fs_info 
*fs_info, u64 group_start)
        rc->block_group = btrfs_lookup_block_group(fs_info, group_start);
        BUG_ON(!rc->block_group);
 
-       ret = btrfs_inc_block_group_ro(extent_root, rc->block_group);
+       ret = btrfs_inc_block_group_ro(fs_info, rc->block_group);
        if (ret) {
                err = ret;
                goto out;
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 9a94670..3a9607dc 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3584,7 +3584,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
                 * -> btrfs_scrub_pause()
                 */
                scrub_pause_on(fs_info);
-               ret = btrfs_inc_block_group_ro(root, cache);
+               ret = btrfs_inc_block_group_ro(fs_info, cache);
                if (!ret && is_dev_replace) {
                        /*
                         * If we are doing a device replace wait for any tasks
-- 
2.7.1

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