mm/swapfile.c: simplify the calculation of n_goal
Use min3() to simplify the comparison and make it more self-explaining.
Signed-off-by: Wei Yang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Hugh Dickins <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/mm/swapfile.c b/mm/swapfile.c
index f3af990..f3b0a2c 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -994,11 +994,7 @@ int get_swap_pages(int n_goal, swp_entry_t swp_entries[], int entry_size)
if (avail_pgs <= 0)
goto noswap;
- if (n_goal > SWAP_BATCH)
- n_goal = SWAP_BATCH;
-
- if (n_goal > avail_pgs)
- n_goal = avail_pgs;
+ n_goal = min3((long)n_goal, (long)SWAP_BATCH, avail_pgs);
atomic_long_sub(n_goal * size, &nr_swap_pages);
