From 50088c440910730baf3248acfad2c846fb3eea77 Mon Sep 17 00:00:00 2001
From: Chen Yucong <slaoub@gmail.com>
Date: Wed, 4 Jun 2014 16:10:57 -0700
Subject: [PATCH] mm/swapfile.c: delete the "last_in_cluster < scan_base" loop
 in the body of scan_swap_map()

Via commit ebc2a1a69111 ("swap: make cluster allocation per-cpu"), we
can find that all SWP_SOLIDSTATE "seek is cheap"(SSD case) has already
gone to si->cluster_info scan_swap_map_try_ssd_cluster() route.  So that
the "last_in_cluster < scan_base" loop in the body of scan_swap_map()
has already become a dead code snippet, and it should have been deleted.

This patch is to delete the redundant loop as Hugh and Shaohua
suggested.

[hughd@google.com: fix comment, simplify code]
Signed-off-by: Chen Yucong <slaoub@gmail.com>
Cc: Shaohua Li <shli@kernel.org>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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