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[PATCH] radix_tag_get(): differentiate between no present node and ta…
…g unset cases Simple patch to radix_tree_tag_get() to return different values for non present node and tag unset. The function is not used by any in-kernel callers (yet), but this information is definitely useful. Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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