On Thu, 17 Dec 2020, Alex Shi wrote:
> rcu_read_lock was used to guard memcg destory, now TestClearPageLRU
> could block this happen, so we don't need it. Remove it to reduce
> locking load in debugging mode.
"
isolate_migratepages_block() used rcu_read_lock() with the intention
of safeguarding
rcu_read_lock was used to guard memcg destory, now TestClearPageLRU
could block this happen, so we don't need it. Remove it to reduce
locking load in debugging mode.
Signed-off-by: Alex Shi
Cc: Hugh Dickins
Cc: Johannes Weiner
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc:
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