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bcachefs: drop bogus percpu_ref_tryget

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caller should already be guarding against rw, and checking here breaks
when caller needs to finish updates for going RO

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2018-11-24 18:27:16 -05:00
committed by Kent Overstreet
parent f0cfb963ec
commit eb8632657f
1 changed files with 1 additions and 7 deletions
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8
fs/bcachefs/btree_update_interior.c
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@@ -562,7 +562,6 @@ static void bch2_btree_update_free(struct btree_update *as)
closure_debug_destroy(&as->cl);
mempool_free(as, &c->btree_interior_update_pool);
percpu_ref_put(&c->writes);
closure_wake_up(&c->btree_interior_update_wait);
mutex_unlock(&c->btree_interior_update_lock);
@@ -1012,14 +1011,9 @@ bch2_btree_update_start(struct bch_fs *c, enum btree_id id,
struct btree_reserve *reserve;
struct btree_update *as;
if (unlikely(!percpu_ref_tryget(&c->writes)))
return ERR_PTR(-EROFS);
reserve = bch2_btree_reserve_get(c, nr_nodes, flags, cl);
if (IS_ERR(reserve)) {
percpu_ref_put(&c->writes);
if (IS_ERR(reserve))
return ERR_CAST(reserve);
}
as = mempool_alloc(&c->btree_interior_update_pool, GFP_NOIO);
memset(as, 0, sizeof(*as));