# git rev-parse -q --verify 7d3bf613e99abbd96ac7b90ee3694a246c975021^{commit}
7d3bf613e99abbd96ac7b90ee3694a246c975021
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7d3bf613e99abbd96ac7b90ee3694a246c975021
# git clean -qxdf
# < git log -1
# commit 7d3bf613e99abbd96ac7b90ee3694a246c975021
# Merge: a381884 930218a
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jun 8 17:21:52 2018 -0700
# 
#     Merge tag 'libnvdimm-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
#     
#     Pull libnvdimm updates from Dan Williams:
#      "This adds a user for the new 'bytes-remaining' updates to
#       memcpy_mcsafe() that you already received through Ingo via the
#       x86-dax- for-linus pull.
#     
#       Not included here, but still targeting this cycle, is support for
#       handling memory media errors (poison) consumed via userspace dax
#       mappings.
#     
#       Summary:
#     
#        - DAX broke a fundamental assumption of truncate of file mapped
#          pages. The truncate path assumed that it is safe to disconnect a
#          pinned page from a file and let the filesystem reclaim the physical
#          block. With DAX the page is equivalent to the filesystem block.
#          Introduce dax_layout_busy_page() to enable filesystems to wait for
#          pinned DAX pages to be released. Without this wait a filesystem
#          could allocate blocks under active device-DMA to a new file.
#     
#        - DAX arranges for the block layer to be bypassed and uses
#          dax_direct_access() + copy_to_iter() to satisfy read(2) calls.
#          However, the memcpy_mcsafe() facility is available through the pmem
#          block driver. In order to safely handle media errors, via the DAX
#          block-layer bypass, introduce copy_to_iter_mcsafe().
#     
#        - Fix cache management policy relative to the ACPI NFIT Platform
#          Capabilities Structure to properly elide cache flushes when they
#          are not necessary. The table indicates whether CPU caches are
#          power-fail protected. Clarify that a deep flush is always performed
#          on REQ_{FUA,PREFLUSH} requests"
#     
#     * tag 'libnvdimm-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
#       dax: Use dax_write_cache* helpers
#       libnvdimm, pmem: Do not flush power-fail protected CPU caches
#       libnvdimm, pmem: Unconditionally deep flush on *sync
#       libnvdimm, pmem: Complete REQ_FLUSH => REQ_PREFLUSH
#       acpi, nfit: Remove ecc_unit_size
#       dax: dax_insert_mapping_entry always succeeds
#       libnvdimm, e820: Register all pmem resources
#       libnvdimm: Debug probe times
#       linvdimm, pmem: Preserve read-only setting for pmem devices
#       x86, nfit_test: Add unit test for memcpy_mcsafe()
#       pmem: Switch to copy_to_iter_mcsafe()
#       dax: Report bytes remaining in dax_iomap_actor()
#       dax: Introduce a ->copy_to_iter dax operation
#       uio, lib: Fix CONFIG_ARCH_HAS_UACCESS_MCSAFE compilation
#       xfs, dax: introduce xfs_break_dax_layouts()
#       xfs: prepare xfs_break_layouts() for another layout type
#       xfs: prepare xfs_break_layouts() to be called with XFS_MMAPLOCK_EXCL
#       mm, fs, dax: handle layout changes to pinned dax mappings
#       mm: fix __gup_device_huge vs unmap
#       mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < git log --format=%s --max-count=1 7d3bf613e99abbd96ac7b90ee3694a246c975021
# < make -s -j 80 ARCH=arm O=/kisskb/build/linus_pleb_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  pleb_defconfig
# make -s -j 80 ARCH=arm O=/kisskb/build/linus_pleb_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
Completed OK
# rm -rf /kisskb/build/linus_pleb_defconfig_arm
# Build took: 0:00:32.720064