btrfs: use free_root_extent_buffer to free root

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In btrfs_put_root() we're freeing a btrfs_root's 'node' and 'commit_root'
extent buffers manually via kfree(), while we're using
free_root_extent_buffers() in the free_root_pointers() function above.

free_root_extent_buffers() also NULLs the pointers after freeing, which
mitigates potential double frees.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Johannes Thumshirn 2020-06-23 17:40:07 +09:00 • committed by David Sterba

parent 4e9d0d0109

commit 923eb52365

1 changed files with 1 additions and 2 deletions

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fs/btrfs/disk-io.c

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