# git rev-parse -q --verify affc5af36bbb62073b6aaa4f4459b38937ff5331^{commit}
affc5af36bbb62073b6aaa4f4459b38937ff5331
already have revision, skipping fetch
# git checkout -q -f -B kisskb affc5af36bbb62073b6aaa4f4459b38937ff5331
# git clean -qxdf
# < git log -1
# commit affc5af36bbb62073b6aaa4f4459b38937ff5331
# Merge: 12958e9c4c8e e94dfb7a2935
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Jan 10 09:27:40 2024 -0800
# 
#     Merge tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs updates from David Sterba:
#      "There are no exciting changes for users, it's been mostly API
#       conversions and some fixes or refactoring.
#     
#       The mount API conversion is a base for future improvements that would
#       come with VFS. Metadata processing has been converted to folios, not
#       yet enabling the large folios but it's one patch away once everything
#       gets tested enough.
#     
#       Core changes:
#     
#        - convert extent buffers to folios:
#           - direct API conversion where possible
#           - performance can drop by a few percent on metadata heavy
#             workloads, the folio sizes are not constant and the calculations
#             add up in the item helpers
#           - both regular and subpage modes
#           - data cannot be converted yet, we need to port that to iomap and
#             there are some other generic changes required
#     
#        - convert mount to the new API, should not be user visible:
#           - options deprecated long time ago have been removed: inode_cache,
#             recovery
#           - the new logic that splits mount to two phases slightly changes
#             timing of device scanning for multi-device filesystems
#           - LSM options will now work (like for selinux)
#     
#        - convert delayed nodes radix tree to xarray, preserving the
#          preload-like logic that still allows to allocate with GFP_NOFS
#     
#        - more validation of sysfs value of scrub_speed_max
#     
#        - refactor chunk map structure, reduce size and improve performance
#     
#        - extent map refactoring, smaller data structures, improved
#          performance
#     
#        - reduce size of struct extent_io_tree, embedded in several
#          structures
#     
#        - temporary pages used for compression are cached and attached to a
#          shrinker, this may slightly improve performance
#     
#        - in zoned mode, remove redirty extent buffer tracking, zeros are
#          written in case an out-of-order is detected and proper data are
#          written to the actual write pointer
#     
#        - cleanups, refactoring, error message improvements, updated tests
#     
#        - verify and update branch name or tag
#     
#        - remove unwanted text"
#     
#     * tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (89 commits)
#       btrfs: pass btrfs_io_geometry into btrfs_max_io_len
#       btrfs: pass struct btrfs_io_geometry to set_io_stripe
#       btrfs: open code set_io_stripe for RAID56
#       btrfs: change block mapping to switch/case in btrfs_map_block
#       btrfs: factor out block mapping for single profiles
#       btrfs: factor out block mapping for RAID5/6
#       btrfs: reduce scope of data_stripes in btrfs_map_block
#       btrfs: factor out block mapping for RAID10
#       btrfs: factor out block mapping for DUP profiles
#       btrfs: factor out RAID1 block mapping
#       btrfs: factor out block-mapping for RAID0
#       btrfs: re-introduce struct btrfs_io_geometry
#       btrfs: factor out helper for single device IO check
#       btrfs: migrate btrfs_repair_io_failure() to folio interfaces
#       btrfs: migrate eb_bitmap_offset() to folio interfaces
#       btrfs: migrate various end io functions to folios
#       btrfs: migrate subpage code to folio interfaces
#       btrfs: migrate get_eb_page_index() and get_eb_offset_in_page() to folios
#       btrfs: don't double put our subpage reference in alloc_extent_buffer
#       btrfs: cleanup metadata page pointer usage
#       ...
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 affc5af36bbb62073b6aaa4f4459b38937ff5331
# make -s -j 24 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# < make -s -j 24 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 24 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 24 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/linus_x86_64_defconfig_x86_64-gcc8
# Build took: 0:04:28.942063