Re: [PATCH 7/8] Revert "ext4: avoid deadlocks in the writeback path by using sb_getblk_gfp"

[Theodore Ts'o]

On Fri, Jan 06, 2017 at 03:11:06PM +0100, Michal Hocko wrote:
> From: Michal Hocko <mhocko@xxxxxxxx>
> 
> This reverts commit c45653c341f5c8a0ce19c8f0ad4678640849cb86 because
> sb_getblk_gfp is not really needed as
> sb_getblk
>   __getblk_gfp
>     __getblk_slow
>       grow_buffers
>         grow_dev_page
> 	  gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp
> 
> so __GFP_FS is cleared unconditionally and therefore the above commit
> didn't have any real effect in fact.
> 
> This patch should not introduce any functional change. The main point
> of this change is to reduce explicit GFP_NOFS usage inside ext4 code to
> make the review of the remaining usage easier.
> 
> Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
> Reviewed-by: Jan Kara <jack@xxxxxxx>

If I'm not mistaken, this patch is not dependent on any of the other
patches in this series (and the other patches are not dependent on
this one).  Hence, I could take this patch via the ext4 tree, correct?

     	    	     	   	     - Ted