On Mon, Jun 06, 2022 at 10:03:34AM +0200, Jan Kara wrote:
> On Sun 05-06-22 15:38:13, Matthew Wilcox (Oracle) wrote:
> > As described in commit 02117b8ae9c0 ("f2fs: Set GF_NOFS in
> > read_cache_page_gfp while doing f2fs_quota_read"), we must not enter
> > filesystem reclaim while holding the dq_lock. Prevent this more generally
> > by using memalloc_nofs_save() while holding the lock.
> >
> > Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
>
> This is definitely a good cleanup to have and seems mostly unrelated to the
> rest. I'll take it rightaway into my tree. Thanks for the patch!
Thanks! It's really a pre-requisite for the second patch; I haven't
seen anywhere in the current codebase that will have a problem. All
the buffer_heads are allocated with GFP_NOFS | __GFP_NOFAIL (in
grow_dev_page()).
