From: Vishal Verma Date: Fri, 23 Jun 2023 21:20:00 +0000 (-0600) Subject: Merge branch 'for-6.5/dax-cleanups' into nvdimm-for-next X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=95bf6df03d412f678a7b558da186c2ef797ac40c;p=linux.git Merge branch 'for-6.5/dax-cleanups' into nvdimm-for-next The reference counting of dax_region objects is needlessly complicated, has lead to confusion [1], and has hidden a bug [2]. While testing the cleanup for those issues, a CONFIG_DEBUG_KOBJECT_RELEASE test run uncovered a use-after-free in dax_mapping_release(). Clean all of that up. Thanks to Yongqiang, Paul, and Ira for their analysis. Additionally, clean up a redundant variable in fsdax, and fix memory hotplug registration in the kmem driver. [1]: http://lore.kernel.org/r/20221203095858.612027-1-liuyongqiang13@huawei.com [2]: http://lore.kernel.org/r/3cf0890b-4eb0-e70e-cd9c-2ecc3d496263@hpe.com --- 95bf6df03d412f678a7b558da186c2ef797ac40c