* Re: [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI
[not found] <20200611072251.474246-1-ming.lei@redhat.com>
@ 2020-07-27 8:14 ` Ming Lei
0 siblings, 0 replies; only message in thread
From: Ming Lei @ 2020-07-27 8:14 UTC (permalink / raw)
To: linux-fsdevel
Cc: Alexander Viro, Christoph Hellwig, Brian Foster, Dave Chinner,
Jens Axboe, linux-block, linux-kernel
On Thu, Jun 11, 2020 at 03:22:51PM +0800, Ming Lei wrote:
> BDI is unregistered from del_gendisk() which is usually done in device's
> release handler from device hotplug or error handling context, so BDI
> can be unregistered anytime.
>
> It should be normal for __mark_inode_dirty to see un-registered BDI,
> so kill the WARN().
>
> Cc: Alexander Viro <viro@zeniv.linux.org.uk>
> Cc: Christoph Hellwig <hch@lst.de>
> Cc: Brian Foster <bfoster@redhat.com>
> Cc: Dave Chinner <dchinner@redhat.com>
> Cc: Jens Axboe <axboe@kernel.dk>
> Cc: linux-block@vger.kernel.org
> Signed-off-by: Ming Lei <ming.lei@redhat.com>
> ---
> fs/fs-writeback.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index a605c3dddabc..5e718580d4bf 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -2318,10 +2318,6 @@ void __mark_inode_dirty(struct inode *inode, int flags)
>
> wb = locked_inode_to_wb_and_lock_list(inode);
>
> - WARN(bdi_cap_writeback_dirty(wb->bdi) &&
> - !test_bit(WB_registered, &wb->state),
> - "bdi-%s not registered\n", bdi_dev_name(wb->bdi));
> -
> inode->dirtied_when = jiffies;
> if (dirtytime)
> inode->dirtied_time_when = jiffies;
Hello Alexander,
Could you merge this patch if you are fine?
Thanks,
Ming
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2020-07-27 8:14 ` [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI Ming Lei
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