bcachefs: Wrap vmap() in memalloc_nofs_save()/restore()

vmalloc() and vmap() don't take GFP_NOFS - this should be pushed further
up the IO path, but for now just doing the simple fix.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-05-21 17:23:40 -04:00 • committed by Kent Overstreet
commit a1b0da4555