All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI
@ 2020-06-11  7:22 Ming Lei
  2020-06-11  7:27 ` Christoph Hellwig
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Ming Lei @ 2020-06-11  7:22 UTC (permalink / raw)
  To: linux-fsdevel
  Cc: Ming Lei, Alexander Viro, Christoph Hellwig, Brian Foster,
	Dave Chinner, Jens Axboe, linux-block

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;
-- 
2.25.2


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI
  2020-06-11  7:22 [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI Ming Lei
@ 2020-06-11  7:27 ` Christoph Hellwig
  2020-06-22  1:41 ` Ming Lei
  2020-07-27  8:14 ` Ming Lei
  2 siblings, 0 replies; 4+ messages in thread
From: Christoph Hellwig @ 2020-06-11  7:27 UTC (permalink / raw)
  To: Ming Lei
  Cc: linux-fsdevel, Alexander Viro, Christoph Hellwig, Brian Foster,
	Dave Chinner, Jens Axboe, linux-block

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().

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI
  2020-06-11  7:22 [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI Ming Lei
  2020-06-11  7:27 ` Christoph Hellwig
@ 2020-06-22  1:41 ` Ming Lei
  2020-07-27  8:14 ` Ming Lei
  2 siblings, 0 replies; 4+ messages in thread
From: Ming Lei @ 2020-06-22  1:41 UTC (permalink / raw)
  To: linux-fsdevel, Alexander Viro
  Cc: Christoph Hellwig, Brian Foster, Dave Chinner, Jens Axboe, linux-block

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>

Hello Guys,

Ping...


Thanks,
Ming


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI
  2020-06-11  7:22 [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI Ming Lei
  2020-06-11  7:27 ` Christoph Hellwig
  2020-06-22  1:41 ` Ming Lei
@ 2020-07-27  8:14 ` Ming Lei
  2 siblings, 0 replies; 4+ messages 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


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-07-27  8:14 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-11  7:22 [PATCH] fs/fs-writeback.c: not WARN on unregistered BDI Ming Lei
2020-06-11  7:27 ` Christoph Hellwig
2020-06-22  1:41 ` Ming Lei
2020-07-27  8:14 ` Ming Lei

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.