From: Jingbo Xu jefflexu@linux.alibaba.com
mainline inclusion from mainline-v6.3-rc1 commit 7032809a44d752b9e2275833787e0aa88a7540af category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB5UKT
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Relinquish fscache volume with mutex held. Otherwise if a new domain is registered when the old domain with the same name gets removed from the list but not relinquished yet, fscache may complain the collision.
Fixes: 8b7adf1dff3d ("erofs: introduce fscache-based domain") Signed-off-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Jia Zhu zhujia.zj@bytedance.com Link: https://lore.kernel.org/r/20230209063913.46341-4-jefflexu@linux.alibaba.com Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com Signed-off-by: Zizhi Wo wozizhi@huawei.com Signed-off-by: Baokun Li libaokun1@huawei.com
Conflicts: fs/erofs/fscache.c --- fs/erofs/fscache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index 12b0c564b7c3..d803c8716909 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -285,8 +285,8 @@ static void erofs_fscache_domain_put(struct erofs_domain *domain) kern_unmount(erofs_pseudo_mnt); erofs_pseudo_mnt = NULL; } - mutex_unlock(&erofs_domain_list_lock); fscache_relinquish_cookie(domain->volume, NULL, false); + mutex_unlock(&erofs_domain_list_lock); kfree(domain->domain_id); kfree(domain); return;