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btrfs: use kvzalloc() to allocate clone_roots in btrfs_ioctl_send()
commit 8eb2fd0 upstream. btrfs_ioctl_send() used open-coded kvzalloc implementation earlier. The code was accidentally replaced with kzalloc() call [1]. Restore the original code by using kvzalloc() to allocate sctx->clone_roots. [1] https://patchwork.kernel.org/patch/9757891/#20529627 Fixes: 818e010 ("btrfs: replace opencoded kvzalloc with the helper") CC: stable@vger.kernel.org # 4.14+ Signed-off-by: Denis Efremov <efremov@linux.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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