The patch titled
Subject: mm, swap: improve readability via make spin_lock/unlock balanced
has been added to the -mm tree. Its filename is
mm-swap-improve-readability-via-make-spin_lock-unlock-balanced.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-swap-improve-readability-via-make-spin_lock-unlock-balanced.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-swap-improve-readability-via-make-spin_lock-unlock-balanced.patch
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------------------------------------------------------
From: Huang Ying <ying.huang@xxxxxxxxx>
Subject: mm, swap: improve readability via make spin_lock/unlock balanced
This is just a cleanup patch, no functionality change. In
cluster_list_add_tail(), spin_lock_nested() is used to lock the cluster,
while unlock_cluster() is used to unlock the cluster. To improve the code
readability. Use spin_unlock() directly to unlock the cluster.
Link: http://lkml.kernel.org/r/20170317064635.12792-2-ying.huang@xxxxxxxxx
Signed-off-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
Acked-by: Tim Chen <tim.c.chen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swapfile.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/swapfile.c~mm-swap-improve-readability-via-make-spin_lock-unlock-balanced mm/swapfile.c
--- a/mm/swapfile.c~mm-swap-improve-readability-via-make-spin_lock-unlock-balanced
+++ a/mm/swapfile.c
@@ -335,7 +335,7 @@ static void cluster_list_add_tail(struct
ci_tail = ci + tail;
spin_lock_nested(&ci_tail->lock, SINGLE_DEPTH_NESTING);
cluster_set_next(ci_tail, idx);
- unlock_cluster(ci_tail);
+ spin_unlock(&ci_tail->lock);
cluster_set_next_flag(&list->tail, idx, 0);
}
}
_
Patches currently in -mm which might be from ying.huang@xxxxxxxxx are
mm-swap-fix-a-race-in-free_swap_and_cache.patch
mm-swap-fix-comment-in-__read_swap_cache_async.patch
mm-swap-improve-readability-via-make-spin_lock-unlock-balanced.patch
mm-swap-avoid-lock-swap_avail_lock-when-held-cluster-lock.patch
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