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btrfs: do not allow free space tree rebuild on extent tree v2

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We currently don't allow these options to be set if we're extent tree v2
via the mount option parsing.  However when we switch to the new mount
API we'll no longer have the super block loaded, so won't be able to
make this distinction at mount option parsing time.  Address this by
checking for extent tree v2 at the point where we make the decision to
rebuild the free space tree.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2023-11-22 12:17:41 -05:00 • committed by David Sterba
parent a6a8f22a4a
commit 272efa308f
1 changed files with 5 additions and 1 deletions
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6
fs/btrfs/disk-io.c
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@ -2969,7 +2969,11 @@ int btrfs_start_pre_rw_mount(struct btrfs_fs_info *fs_info)
if (btrfs_test_opt(fs_info, CLEAR_CACHE) &&
btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) {
rebuild_free_space_tree = true;
if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2))
btrfs_warn(fs_info,
"'clear_cache' option is ignored with extent tree v2");
else
rebuild_free_space_tree = true;
} else if (btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE) &&
!btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE_VALID)) {
btrfs_warn(fs_info, "free space tree is invalid");