From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Tue, 11 Oct 2022 08:49:23 +0000 (-0400)
Subject: bcachefs: Fix cached data accounting
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5b3243cb528f96e5d90d65f56f96ad179c666ff5;p=linux.git

bcachefs: Fix cached data accounting

Negating without casting to a signed integer means the value wasn't
getting sign extended properly - oops.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/buckets.c b/fs/bcachefs/buckets.c
index 4b041707cd54b..5cb4a00166f93 100644
--- a/fs/bcachefs/buckets.c
+++ b/fs/bcachefs/buckets.c
@@ -578,7 +578,7 @@ int bch2_mark_alloc(struct btree_trans *trans,
 	if ((flags & BTREE_TRIGGER_BUCKET_INVALIDATE) &&
 	    old_a.cached_sectors) {
 		ret = update_cached_sectors(c, new, ca->dev_idx,
-					    -old_a.cached_sectors,
+					    -((s64) old_a.cached_sectors),
 					    journal_seq, gc);
 		if (ret) {
 			bch2_fs_fatal_error(c, "bch2_mark_alloc(): no replicas entry while updating cached sectors");