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由 Jeff Mahoney 提交于
With the exception of the one case where btrfs_wait_cache_io is called without a block group, it's called with the same arguments. The root argument is only used in the special case, so let's factor out the core and simplify the call in the normal case to require a trans, block group, and path. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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