# git rev-parse -q --verify 55ba0fe059a577fa08f23223991b24564962620f^{commit}
55ba0fe059a577fa08f23223991b24564962620f
already have revision, skipping fetch
# git checkout -q -f -B kisskb 55ba0fe059a577fa08f23223991b24564962620f
# git clean -qxdf
# < git log -1
# commit 55ba0fe059a577fa08f23223991b24564962620f
# Merge: 2a19866b6e4c 18bb8bbf13c1
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Apr 26 13:48:02 2021 -0700
# 
#     Merge tag 'for-5.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs updates from David Sterba:
#      "The updates this time are mostly stabilization, preparation and minor
#       improvements.
#     
#       User visible improvements:
#     
#        - readahead for send, improving run time of full send by 10% and for
#          incremental by 25%
#     
#        - make reflinks respect O_SYNC, O_DSYNC and S_SYNC flags
#     
#        - export supported sectorsize values in sysfs (currently only page
#          size, more once full subpage support lands)
#     
#        - more graceful errors and warnings on 32bit systems when logical
#          addresses for metadata reach the limit posed by unsigned long in
#          page::index
#           - error: fail mount if there's a metadata block beyond the limit
#           - error: new metadata block would be at unreachable address
#           - warn when 5/8th of the limit is reached, for 4K page systems
#             it's 10T, for 64K page it's 160T
#     
#        - zoned mode
#           - relocated zones get reset at the end instead of discard
#           - automatic background reclaim of zones that have 75%+ of unusable
#             space, the threshold is tunable in sysfs
#     
#       Fixes:
#     
#        - fsync and tree mod log fixes
#     
#        - fix inefficient preemptive reclaim calculations
#     
#        - fix exhaustion of the system chunk array due to concurrent
#          allocations
#     
#        - fix fallback to no compression when racing with remount
#     
#        - preemptive fix for dm-crypt on zoned device that does not properly
#          advertise zoned support
#     
#       Core changes:
#     
#        - add inode lock to synchronize mmap and other block updates (eg.
#          deduplication, fallocate, fsync)
#     
#        - kmap conversions to new kmap_local API
#     
#        - subpage support (continued)
#           - new helpers for page state/extent buffer tracking
#           - metadata changes now support read and write
#     
#        - error handling through out relocation call paths
#     
#        - many other cleanups and code simplifications"
#     
#     * tag 'for-5.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (112 commits)
#       btrfs: zoned: automatically reclaim zones
#       btrfs: rename delete_unused_bgs_mutex to reclaim_bgs_lock
#       btrfs: zoned: reset zones of relocated block groups
#       btrfs: more graceful errors/warnings on 32bit systems when reaching limits
#       btrfs: zoned: fix unpaired block group unfreeze during device replace
#       btrfs: fix race when picking most recent mod log operation for an old root
#       btrfs: fix metadata extent leak after failure to create subvolume
#       btrfs: handle remount to no compress during compression
#       btrfs: zoned: fail mount if the device does not support zone append
#       btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
#       btrfs: introduce submit_eb_subpage() to submit a subpage metadata page
#       btrfs: make lock_extent_buffer_for_io() to be subpage compatible
#       btrfs: introduce write_one_subpage_eb() function
#       btrfs: introduce end_bio_subpage_eb_writepage() function
#       btrfs: check return value of btrfs_commit_transaction in relocation
#       btrfs: do proper error handling in merge_reloc_roots
#       btrfs: handle extent corruption with select_one_root properly
#       btrfs: cleanup error handling in prepare_to_merge
#       btrfs: do not panic in __add_reloc_root
#       btrfs: handle __add_reloc_root failures in btrfs_recover_relocation
#       ...
# < /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 55ba0fe059a577fa08f23223991b24564962620f
# < make -s -j 48 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
KCONFIG_SEED=0x41DCD78
# 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 48 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 48 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:5498:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
.config:5500:warning: override: reassigning to symbol GCC_PLUGINS
# make -s -j 48 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: 0:03:36.288209