# git rev-parse -q --verify 7af81cd0c4306482b49a3adce0fb2f8655f57d0f^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 7af81cd0c4306482b49a3adce0fb2f8655f57d0f^{commit}
7af81cd0c4306482b49a3adce0fb2f8655f57d0f
# git checkout -q -f -B kisskb 7af81cd0c4306482b49a3adce0fb2f8655f57d0f
# git clean -qxdf
# < git log -1
# commit 7af81cd0c4306482b49a3adce0fb2f8655f57d0f
# Merge: 152d32aa8468 ca4a4e9a55be
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat May 1 11:34:03 2021 -0700
# 
#     Merge tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
#     
#     Pull device mapper updates from Mike Snitzer:
#     
#      - Improve scalability of DM's device hash by switching to rbtree
#     
#      - Extend DM ioctl's DM_LIST_DEVICES_CMD handling to include UUID and
#        allow filtering based on name or UUID prefix.
#     
#      - Various small fixes for typos, warnings, unused function, or
#        needlessly exported interfaces.
#     
#      - Remove needless request_queue NULL pointer checks in DM thin and
#        cache targets.
#     
#      - Remove unnecessary loop in DM core's __split_and_process_bio().
#     
#      - Remove DM core's dm_vcalloc() and just use kvcalloc or kvmalloc_array
#        instead (depending whether zeroing is useful).
#     
#      - Fix request-based DM's double free of blk_mq_tag_set in device remove
#        after table load fails.
#     
#      - Improve DM persistent data performance on non-x86 by fixing packed
#        structs to have a stated alignment. Also remove needless extra work
#        from redundant calls to sm_disk_get_nr_free() and a paranoid BUG_ON()
#        that caused duplicate checksum calculation.
#     
#      - Fix missing goto in DM integrity's bitmap_flush_interval error
#        handling.
#     
#      - Add "reset_recalculate" feature flag to DM integrity.
#     
#      - Improve DM integrity by leveraging discard support to avoid needless
#        re-writing of metadata and also use discard support to improve hash
#        recalculation.
#     
#      - Fix race with DM raid target's reshape and MD raid4/5/6 resync that
#        resulted in inconsistant reshape state during table reloads.
#     
#      - Update DM raid target to temove unnecessary discard limits for raid0
#        and raid10 now that MD has optimized discard handling for both raid
#        levels.
#     
#     * tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits)
#       dm raid: remove unnecessary discard limits for raid0 and raid10
#       dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
#       dm integrity: use discard support when recalculating
#       dm integrity: increase RECALC_SECTORS to improve recalculate speed
#       dm integrity: don't re-write metadata if discarding same blocks
#       dm raid: fix inconclusive reshape layout on fast raid4/5/6 table reload sequences
#       dm raid: fix fall-through warning in rs_check_takeover() for Clang
#       dm clone metadata: remove unused function
#       dm integrity: fix missing goto in bitmap_flush_interval error handling
#       dm: replace dm_vcalloc()
#       dm space map common: fix division bug in sm_ll_find_free_block()
#       dm persistent data: packed struct should have an aligned() attribute too
#       dm btree spine: remove paranoid node_check call in node_prep_for_write()
#       dm space map disk: remove redundant calls to sm_disk_get_nr_free()
#       dm integrity: add the "reset_recalculate" feature flag
#       dm persistent data: remove unused return from exit_shadow_spine()
#       dm cache: remove needless request_queue NULL pointer checks
#       dm thin: remove needless request_queue NULL pointer check
#       dm: unexport dm_{get,put}_table_device
#       dm ebs: fix a few typos
#       ...
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 7af81cd0c4306482b49a3adce0fb2f8655f57d0f
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  randconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_BPF_PRELOAD=n
# Added to kconfig 
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
.config:5387:warning: override: reassigning to symbol STANDALONE
.config:5390:warning: override: reassigning to symbol GCC_PLUGINS
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:01:34.201340