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Date: Sun, 19 Apr 2020 01:39:18 +0000 From: Wei Yang <richard.weiyang@...il.com> To: akpm@...ux-foundation.org Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, tim.c.chen@...ux.intel.com, ying.huang@...el.com, Wei Yang <richard.weiyang@...il.com> Subject: [PATCH 1/4] mm/swapfile.c: found_free could be represented by (tmp < max) This is not necessary to use the variable found_free to record the status. Just check tmp and max is enough. Signed-off-by: Wei Yang <richard.weiyang@...il.com> --- mm/swapfile.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/mm/swapfile.c b/mm/swapfile.c index c457f3be6944..654bad5173bc 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -601,7 +601,6 @@ static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si, { struct percpu_cluster *cluster; struct swap_cluster_info *ci; - bool found_free; unsigned long tmp, max; new_cluster: @@ -623,8 +622,6 @@ static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si, return false; } - found_free = false; - /* * Other CPUs can use our cluster if they can't find a free cluster, * check if there is still free entry in the cluster @@ -638,21 +635,19 @@ static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si, } ci = lock_cluster(si, tmp); while (tmp < max) { - if (!si->swap_map[tmp]) { - found_free = true; + if (!si->swap_map[tmp]) break; - } tmp++; } unlock_cluster(ci); - if (!found_free) { + if (tmp >= max) { cluster_set_null(&cluster->index); goto new_cluster; } cluster->next = tmp + 1; *offset = tmp; *scan_base = tmp; - return found_free; + return tmp < max; } static void __del_from_avail_list(struct swap_info_struct *p) -- 2.23.0
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