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btrfs: add a leak check for roots

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Now that we're going to start relying on getting ref counting right for
roots, add a list to track allocated roots and print out any roots that
aren't freed up at free_fs_info time.

Hide this behind CONFIG_BTRFS_DEBUG because this will just be used for
developers to verify they aren't breaking things.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
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
2020-01-24 09:33:00 -05:00
committed by David Sterba
parent 8260edba67
commit bd647ce385
4 changed files with 42 additions and 1 deletions
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fs/btrfs/tests/btrfs-tests.c
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@@ -193,6 +193,7 @@ void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
btrfs_free_fs_roots(fs_info);
cleanup_srcu_struct(&fs_info->subvol_srcu);
kfree(fs_info->super_copy);
btrfs_check_leaked_roots(fs_info);
kfree(fs_info->fs_devices);
kfree(fs_info);
}