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mm: compaction: remove unneeded assignment to isolate_start_pfn 

isolate_start_pfn is unused when cc->nr_freepages !  = 0.  Otherwise
cc->free_pfn will overwrite it unconditionally.  So we should remove this
unneeded and somewhat misleading assignment.

Link: https://lkml.kernel.org/r/20220418141253.24298-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Charan Teja Kalla <charante@codeaurora.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Pintu Kumar <pintu@codeaurora.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-04-28 23:16:17 -07:00 committed by akpm
parent 02d04a5163
commit 00bc102f82
1 changed files with 1 additions and 1 deletions
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2
mm/compaction.c
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@ -1586,7 +1586,7 @@ static void isolate_freepages(struct compact_control *cc)
unsigned int stride;
/* Try a small search of the free lists for a candidate */
isolate_start_pfn = fast_isolate_freepages(cc);
fast_isolate_freepages(cc);
if (cc->nr_freepages)
goto splitmap;