# git rev-parse -q --verify 720261cfc7329406a50c2a8536e0039b9dd9a4e5^{commit}
720261cfc7329406a50c2a8536e0039b9dd9a4e5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 720261cfc7329406a50c2a8536e0039b9dd9a4e5
# git clean -qxdf
# < git log -1
# commit 720261cfc7329406a50c2a8536e0039b9dd9a4e5
# Merge: 4f40c636b291 a97b43fac5b9
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Jul 18 17:27:43 2024 -0700
# 
#     Merge tag 'bcachefs-2024-07-18.2' of https://evilpiepirate.org/git/bcachefs
#     
#     Pull bcachefs updates from Kent Overstreet:
#     
#      - Metadata version 1.8: Stripe sectors accounting, BCH_DATA_unstriped
#     
#        This splits out the accounting of dirty sectors and stripe sectors in
#        alloc keys; this lets us see stripe buckets that still have unstriped
#        data in them.
#     
#        This is needed for ensuring that erasure coding is working correctly,
#        as well as completing stripe creation after a crash.
#     
#      - Metadata version 1.9: Disk accounting rewrite
#     
#        The previous disk accounting scheme relied heavily on percpu counters
#        that were also sharded by outstanding journal buffer; it was fast but
#        not extensible or scalable, and meant that all accounting counters
#        were recorded in every journal entry.
#     
#        The new disk accounting scheme stores accounting as normal btree
#        keys; updates are deltas until they are flushed by the btree write
#        buffer.
#     
#        This means we have no practical limit on the number of counters, and
#        a new tagged union format that's easy to extend.
#     
#        We now have counters for compression type/ratio, per-snapshot-id
#        usage, per-btree-id usage, and pending rebalance work.
#     
#      - Self healing on read IO/checksum error
#     
#        Data is now automatically rewritten if we get a read error and then a
#        successful retry
#     
#      - Mount API conversion (thanks to Thomas Bertschinger)
#     
#      - Better lockdep coverage
#     
#        Previously, btree node locks were tracked individually by lockdep,
#        like any other lock. But we may take _many_ btree node locks
#        simultaneously, we easily blow through the limit of 48 locks that
#        lockdep can track, leading to lockdep turning itself off.
#     
#        Tracking each btree node lock individually isn't really necessary
#        since we have our own cycle detector for deadlock avoidance and
#        centralized tracking of btree node locks, so we now have a single
#        lockdep_map in btree_trans for "any btree nodes are locked".
#     
#      - Some more small incremental work towards online check_allocations
#     
#      - Lots more debugging improvements
#     
#      - Fixes, including:
#         - undefined behaviour fixes, originally noted as breaking userspace
#           LTO builds
#         - fix a spurious warning in fsck_err, reported by Marcin
#         - fix an integer overflow on trans->nr_updates, also reported by
#           Marcin; this broke during deletion of highly fragmented indirect
#           extents
#     
#     * tag 'bcachefs-2024-07-18.2' of https://evilpiepirate.org/git/bcachefs: (120 commits)
#       lockdep: Add comments for lockdep_set_no{validate,track}_class()
#       bcachefs: Fix integer overflow on trans->nr_updates
#       bcachefs: silence silly kdoc warning
#       bcachefs: Fix fsck warning about btree_trans not passed to fsck error
#       bcachefs: Add an error message for insufficient rw journal devs
#       bcachefs: varint: Avoid left-shift of a negative value
#       bcachefs: darray: Don't pass NULL to memcpy()
#       bcachefs: Kill bch2_assert_btree_nodes_not_locked()
#       bcachefs: Rename BCH_WRITE_DONE -> BCH_WRITE_SUBMITTED
#       bcachefs: __bch2_read(): call trans_begin() on every loop iter
#       bcachefs: show none if label is not set
#       bcachefs: drop packed, aligned from bkey_inode_buf
#       bcachefs: btree node scan: fall back to comparing by journal seq
#       bcachefs: Add lockdep support for btree node locks
#       lockdep: lockdep_set_notrack_class()
#       bcachefs: Improve copygc_wait_to_text()
#       bcachefs: Convert clock code to u64s
#       bcachefs: Improve startup message
#       bcachefs: Self healing on read IO error
#       bcachefs: Make read_only a mount option again, but hidden
#       ...
# < /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 720261cfc7329406a50c2a8536e0039b9dd9a4e5
# make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allnoconfig_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 160 ARCH=x86_64 O=/kisskb/build/linus_allnoconfig_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 160 ARCH=x86_64 O=/kisskb/build/linus_allnoconfig_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_allnoconfig_x86_64-gcc8
# Build took: 0:01:23.952354