bcachefs: Fix a lockdep splat

We can't allocate memory with GFP_FS while holding the btree cache lock,
and vfree() can allocate memory.

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 2020-10-11 16:33:49 -04:00 • committed by Kent Overstreet
commit 5d0b7f906a