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| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2020-06-23 17:40:07 +0900 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-07-27 12:55:27 +0200 |
| commit | 923eb5236597c90b11114926025e0c04e4c1da32 (patch) | |
| tree | 8dc1ea29912fc8a05fa01ec2813ab83bfcafacff /fs | |
| parent | 4e9d0d0109d6b7ababf4d121168b0e97e4ae2f9d (diff) | |
| download | linux-923eb5236597c90b11114926025e0c04e4c1da32.tar.bz2 | |
btrfs: use free_root_extent_buffer to free root
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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index a9cf6152d175..b5b7055b7953 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2001,8 +2001,7 @@ void btrfs_put_root(struct btrfs_root *root) if (root->anon_dev) free_anon_bdev(root->anon_dev); btrfs_drew_lock_destroy(&root->snapshot_lock); - free_extent_buffer(root->node); - free_extent_buffer(root->commit_root); + free_root_extent_buffers(root); kfree(root->free_ino_ctl); kfree(root->free_ino_pinned); #ifdef CONFIG_BTRFS_DEBUG |