The warning about "bdi-%s not registered" in __mark_inode_dirty() is incorrect and can relatively easily be triggered during failsafe testing of any file system where the test involves unplugging the storage without unmounting in the middle of write operations.
Even if the filesystem checks "is device not unplugged" before calling __mark_inode_dirty() the device unplug can happen after this check has been performed but before __mark_inode_dirty() gets to the check inside the WARN().
Thus this patch simply removes this warning as it is perfectly normal thing to happen when volume is unplugged whilst being written to.
Signed-off-by: Anton Altaparmakov anton@tuxera.com Cc: stable@vger.kernel.org --- fs/fs-writeback.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 76ac9c7d32ec..443134d3dbf3 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", wb->bdi->name); - inode->dirtied_when = jiffies; if (dirtytime) inode->dirtied_time_when = jiffies;