# git rev-parse -q --verify 81aa0968b7ea6dbabcdcda37dc8434dca6e1565b^{commit}
81aa0968b7ea6dbabcdcda37dc8434dca6e1565b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 81aa0968b7ea6dbabcdcda37dc8434dca6e1565b
# git clean -qxdf
# < git log -1
# commit 81aa0968b7ea6dbabcdcda37dc8434dca6e1565b
# Merge: dc0337999d87 485df7555425
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Mar 18 13:38:42 2021 -0700
# 
#     Merge tag 'for-5.12-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs fixes from David Sterba:
#      "There are still regressions being found and fixed in the zoned mode
#       and subpage code, the rest are fixes for bugs reported by users.
#     
#       Regressions:
#     
#        - subpage block support:
#           - readahead works on the proper block size
#           - fix last page zeroing
#     
#        - zoned mode:
#           - linked list corruption for tree log
#     
#       Fixes:
#     
#        - qgroup leak after falloc failure
#     
#        - tree mod log and backref resolving:
#           - extent buffer cloning race when resolving backrefs
#           - pin deleted leaves with active tree mod log users
#     
#        - drop debugging flag from slab cache"
#     
#     * tag 'for-5.12-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
#       btrfs: always pin deleted leaves when there are active tree mod log users
#       btrfs: fix race when cloning extent buffer during rewind of an old root
#       btrfs: fix slab cache flags for free space tree bitmap
#       btrfs: subpage: make readahead work properly
#       btrfs: subpage: fix wild pointer access during metadata read failure
#       btrfs: zoned: fix linked list corruption after log root tree allocation failure
#       btrfs: fix qgroup data rsv leak caused by falloc failure
#       btrfs: track qgroup released data in own variable in insert_prealloc_file_extent
#       btrfs: fix wrong offset to zero out range beyond i_size
# < /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 81aa0968b7ea6dbabcdcda37dc8434dca6e1565b
# < make -s -j 32 ARCH=arm O=/kisskb/build/linus_shmobile_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  shmobile_defconfig
# < make -s -j 32 ARCH=arm O=/kisskb/build/linus_shmobile_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 32 ARCH=arm O=/kisskb/build/linus_shmobile_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 32 ARCH=arm O=/kisskb/build/linus_shmobile_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
In file included from /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/plugin/include/tm.h:23,
                 from /kisskb/src/scripts/gcc-plugins/gcc-common.h:15,
                 from /kisskb/src/scripts/gcc-plugins/arm_ssp_per_task_plugin.c:3:
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/plugin/include/config/elfos.h:102:21: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
    fprintf ((FILE), "%s"HOST_WIDE_INT_PRINT_UNSIGNED"\n",\
                     ^
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/plugin/include/config/elfos.h:170:24: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",  \
                        ^
In file included from /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/plugin/include/tm.h:44,
                 from /kisskb/src/scripts/gcc-plugins/gcc-common.h:15,
                 from /kisskb/src/scripts/gcc-plugins/arm_ssp_per_task_plugin.c:3:
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/plugin/include/defaults.h:126:24: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",  \
                        ^
cc1plus: warning: unrecognized command line option '-Wno-format-diag'
Completed OK
# rm -rf /kisskb/build/linus_shmobile_defconfig_arm-gcc4.9
# Build took: 0:01:24.930120