Hi Linus, please pull from: git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/libnvdimm-fixes-5.9-rc6 ...to receive a handful of fixes to address a string of mistakes in the mechanism for device-mapper to determine if its component devices are dax capable. You will notice that this branch was rebased this morning and it has not appeared in -next. I decided to cut short the soak time because the infinite-recursion regression is currently crashing anyone attempting to test filesystem-dax in 5.9-rc5+. The most recent rebase folded in a compile fix reported by the kbuild robot for the uncommon CONFIG_DAX=m case. It should, "should", be all good now. --- The following changes since commit 856deb866d16e29bd65952e0289066f6078af773: Linux 5.9-rc5 (2020-09-13 16:06:00 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/libnvdimm-fixes-5.9-rc6 for you to fetch changes up to d4c5da5049ac27c6ef8f6f98548c3a1ade352d25: dax: Fix stack overflow when mounting fsdax pmem device (2020-09-20 08:57:36 -0700) ---------------------------------------------------------------- libnvdimm fixes for 5.9-rc6 - Fix an original bug in device-mapper table reference counting when interrogating dax capability in the component device. This bug was hidden by the following bug. - Fix device-mapper to use the proper helper (dax_supported() instead of the leaf helper generic_fsdax_supported()) to determine dax operation of a stacked block device configuration. The original implementation is only valid for one level of dax-capable block device stacking. This bug was discovered while fixing the below regression. - Fix an infinite recursion regression introduced by broken attempts to quiet the generic_fsdax_supported() path and make it bail out before logging "dax capability not found" errors. ---------------------------------------------------------------- Adrian Huang (1): dax: Fix stack overflow when mounting fsdax pmem device Dan Williams (1): dm/dax: Fix table reference counts Jan Kara (1): dm: Call proper helper to determine dax support drivers/dax/super.c | 16 ++++++++++------ drivers/md/dm-table.c | 10 +++++++--- drivers/md/dm.c | 5 +++-- include/linux/dax.h | 22 ++++++++++++++++++++-- 4 files changed, 40 insertions(+), 13 deletions(-) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel