xfs: fix up quotacheck buffer list error handling
The quotacheck error handling of the delwri buffer list assumes the resident buffers are locked and doesn't clear the _XBF_DELWRI_Q flag on the buffers that are dequeued. This can lead to assert failures on buffer release and possibly other locking problems. Move this code to a delwri queue cancel helper function to encapsulate the logic required to properly release buffers from a delwri queue. Update the helper to clear the delwri queue flag and call it from quotacheck. Signed-off-by: NBrian Foster <bfoster@redhat.com> Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
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