# git rev-parse -q --verify d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e^{commit}
d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e
# git checkout -q -f -B kisskb d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e
# git clean -qxdf
# < git log -1
# commit d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e
# Merge: 2c41fab1c60b 64395d950bc4
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Mar 21 14:06:10 2021 -0700
# 
#     Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
#     
#     Pull ext4 fixes from Ted Ts'o:
#      "Miscellaneous ext4 bug fixes for v5.12"
#     
#     * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
#       ext4: initialize ret to suppress smatch warning
#       ext4: stop inode update before return
#       ext4: fix rename whiteout with fast commit
#       ext4: fix timer use-after-free on failed mount
#       ext4: fix potential error in ext4_do_update_inode
#       ext4: do not try to set xattr into ea_inode if value is empty
#       ext4: do not iput inode under running transaction in ext4_rename()
#       ext4: find old entry again if failed to rename whiteout
#       ext4: fix error handling in ext4_end_enable_verity()
#       ext4: fix bh ref count on error paths
#       fs/ext4: fix integer overflow in s_log_groups_per_flex
#       ext4: add reclaim checks to xattr code
#       ext4: shrink race window in ext4_should_retry_alloc()
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 d7f5f1bd3c240c4d527c0871a38dc3d61255ea9e
# < make -s -j 10 ARCH=arm O=/kisskb/build/linus_magician_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  magician_defconfig
# < make -s -j 10 ARCH=arm O=/kisskb/build/linus_magician_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  help
# make -s -j 10 ARCH=arm O=/kisskb/build/linus_magician_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  olddefconfig
# make -s -j 10 ARCH=arm O=/kisskb/build/linus_magician_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
Completed OK
# rm -rf /kisskb/build/linus_magician_defconfig_arm-gcc4.9
# Build took: 0:01:06.764769