Re: [PATCH] xfs: on memory failure, only shut down fs after scanning all mappings

[Dave Chinner]

On Thu, Aug 18, 2022 at 10:00:17AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> xfs_dax_failure_fn is used to scan the filesystem during a memory
> failure event to look for memory mappings to revoke.  Unfortunately, if
> it encounters an rmap record for filesystem metadata, it will shut down
> the filesystem and the scan immediately.  This means that we don't
> complete the mapping revocation scan and instead leave live mappings to
> failed memory.  Fix the function to defer the shutdown until after we've
> finished culling mappings.
> 
> While we're at it, add the usual "xfs_" prefix to struct failure_info,
> and actually initialize mf_flags.
> 
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>

Looks fine.

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
-- 
Dave Chinner
david@xxxxxxxxxxxxx