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 replace the WARN() with pr_debug() just for debug purpose.
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Brian Foster <bfoster@xxxxxxxxxx>
Cc: Dave Chinner <dchinner@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: linux-block@xxxxxxxxxxxxxxx
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
fs/fs-writeback.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index a605c3dddabc..5b7a5f5803ff 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2318,9 +2318,10 @@ 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));
+ if (bdi_cap_writeback_dirty(wb->bdi) &&
+ !test_bit(WB_registered, &wb->state))
+ pr_debug("bdi-%s not registered\n",
+ bdi_dev_name(wb->bdi));
inode->dirtied_when = jiffies;
if (dirtytime)
--
2.25.2
