mm: swap: add comment for swap_vma_readahead

swap_vma_readahead()'s comment is missing, just add it.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Yang Shi <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Huang Ying <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Daniel Jordan <[email protected]>
Cc: Hugh Dickins <[email protected]
Cc: Jens Axboe <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions