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bcachefs: Fix uninitialized data in bch2_gc_btree()

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Running the filesystem under valgrind exposed a path where the max_stale
variable in bch2_gc_btree() might not be initialized before use in a
rare case when there are no btree nodes in a transaction.

Signed-off-by: Justin Husted <sigstop@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Justin Husted
2019-10-08 19:16:28 -07:00
committed by Kent Overstreet
parent a40d97a771
commit f7c0fcdd39
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/btree_gc.c
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@@ -218,7 +218,7 @@ static int bch2_gc_btree(struct bch_fs *c, enum btree_id btree_id,
: expensive_debug_checks(c) ? 0
: !btree_node_type_needs_gc(btree_id) ? 1
: 0;
u8 max_stale;
u8 max_stale = 0;
int ret = 0;
bch2_trans_init(&trans, c, 0, 0);