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Subject[PATCH v4 1/3] btrfs: add might_sleep() to some places in update_qgroup_limit_item()
Date
As the potential sleeping under spin lock is hard to spot, we should add
might_sleep() to some places.

Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/btrfs/ctree.c | 2 ++
fs/btrfs/qgroup.c | 2 ++
2 files changed, 4 insertions(+)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index a9543f01184c..809053e9cfde 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1934,6 +1934,8 @@ int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root,
int min_write_lock_level;
int prev_cmp;

+ might_sleep();
+
lowest_level = p->lowest_level;
WARN_ON(lowest_level && ins_len > 0);
WARN_ON(p->nodes[0] != NULL);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 9334c3157c22..d0480b9c6c86 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -779,6 +779,8 @@ static int update_qgroup_limit_item(struct btrfs_trans_handle *trans,
int ret;
int slot;

+ might_sleep();
+
key.objectid = 0;
key.type = BTRFS_QGROUP_LIMIT_KEY;
key.offset = qgroup->qgroupid;
--
2.31.1
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