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mas_set_range() resets the node to MAS_START, which will cause a re-walk of the tree to the range. This is unnecessary when the maple state is already at the correct location of the write. Add a function that only sets the range to avoid unnecessary re-walking of the tree. Link: https://lkml.kernel.org/r/20230724183157.3939892-6-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>