Re: [PATCH] Fix queueing work if !bdi_cap_writeback_dirty()

[OGAWA Hirofumi]

Fengguang Wu <fengguang.wu@xxxxxxxxx> writes:

>> If used custom bdi with BDI_CAP_NO_WRITEBACK, wait_for_completion()
>> (e.g. sync_inodes_sb()) will be blocked forever.
>
> The sync(2) block cannot be fixed by this patch?

This patch fixes block problem too.

>> I tested by custom bdi with BDI_CAP_NO_WRITEBACK - sync(2) blocked
>> forever by this reason.
>
> What's your test script? How do you create/use that custom bdi?

Ah, I wrote my kernel module to test. I guess there is no users in
current kernel for now, because it doesn't work.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
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