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* [patch 019/158] mm: memcontrol: remove dead code from memory_max_write()
@ 2019-12-01  1:50 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2019-12-01  1:50 UTC (permalink / raw)
  To: akpm, hannes, linux-mm, mhocko, mm-commits, torvalds, vdavydov.dev

From: Johannes Weiner <hannes@cmpxchg.org>
Subject: mm: memcontrol: remove dead code from memory_max_write()

When the reclaim loop in memory_max_write() is ^C'd or similar, we set err
to -EINTR.  But we don't return err.  Once the limit is set, we always
return success (nbytes).  Delete the dead code.

Link: http://lkml.kernel.org/r/20191022201518.341216-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memcontrol.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/mm/memcontrol.c~mm-memcontrol-remove-dead-code-from-memory_max_write
+++ a/mm/memcontrol.c
@@ -6139,10 +6139,8 @@ static ssize_t memory_max_write(struct k
 		if (nr_pages <= max)
 			break;
 
-		if (signal_pending(current)) {
-			err = -EINTR;
+		if (signal_pending(current))
 			break;
-		}
 
 		if (!drained) {
 			drain_all_stock(memcg);
_


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2019-12-01  1:50 [patch 019/158] mm: memcontrol: remove dead code from memory_max_write() akpm

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