[PATCH] swap: update swapfile i_sem comment
Update swap extents comment: nowadays we guard with S_SWAPFILE not i_sem. Signed-off-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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