On Wed, Aug 05, 2015 at 11:51:24AM +0200, mho...@kernel.org wrote:
> From: Michal Hocko <mho...@suse.com>
> 
> alloc_btrfs_bio is relying on GFP_NOFS to allocate a bio but since "mm:
> page_alloc: do not lock up GFP_NOFS allocations upon OOM" this is
> allowed to fail which can lead to
> [   37.928625] kernel BUG at fs/btrfs/extent_io.c:4045
> 
> This is clearly undesirable and the nofail behavior should be explicit
> if the allocation failure cannot be tolerated.
> 
> Signed-off-by: Michal Hocko <mho...@suse.com>

Reviewed-by: David Sterba <dste...@suse.com>
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