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bcachefs: Add missing READ_ONCE() for metadata replicas

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If we race with the user changing the metadata_replicas setting, this
could cause us to get an incorrectly sized disk reservation.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-04-16 18:28:25 -04:00
parent 72b5259053
commit 8dd3804bf4
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/btree_update_interior.c
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@ -1221,7 +1221,7 @@ bch2_btree_update_start(struct btree_trans *trans, struct btree_path *path,
ret = bch2_disk_reservation_get(c, &as->disk_res,
(nr_nodes[0] + nr_nodes[1]) * btree_sectors(c),
c->opts.metadata_replicas,
READ_ONCE(c->opts.metadata_replicas),
disk_res_flags);
if (ret)
goto err;