Re: [PATCH v3 2/3] zram: revalidate disk under init_lock
From: Sergey Senozhatsky <hidden>
Date: 2016-11-26 06:39:58
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From: Sergey Senozhatsky <hidden>
Date: 2016-11-26 06:39:58
Also in:
lkml
Hi, On (11/25/16 17:35), Minchan Kim wrote:
[1] moved revalidate_disk call out of init_lock to avoid lockdep false-positive splat. However, [2] remove init_lock in IO path so there is no worry about lockdep splat. So, let's restore it. This patch need to set BDI_CAP_STABLE_WRITES atomically in next patch.
can we break that dependency on the next patch if we would set BDI_CAP_STABLE_WRITES when we allocate the queue? queue->backing_dev_info.capabilities |= BDI_CAP_CGROUP_WRITEBACK; -ss