# git rev-parse -q --verify f873db9acd3c92d4741bc3676c9eb511b2f9a6f6^{commit}
f873db9acd3c92d4741bc3676c9eb511b2f9a6f6
already have revision, skipping fetch
# git checkout -q -f -B kisskb f873db9acd3c92d4741bc3676c9eb511b2f9a6f6
# git clean -qxdf
# < git log -1
# commit f873db9acd3c92d4741bc3676c9eb511b2f9a6f6
# Merge: 349111f050b5 867a23eab528
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Aug 21 14:59:16 2020 -0700
# 
#     Merge tag 'io_uring-5.9-2020-08-21' of git://git.kernel.dk/linux-block
#     
#     Pull io_uring fixes from Jens Axboe:
#     
#      - Make sure the head link cancelation includes async work
#     
#      - Get rid of kiocb_wait_page_queue_init(), makes no sense to have it as
#        a separate function since you moved it into io_uring itself
#     
#      - io_import_iovec cleanups (Pavel, me)
#     
#      - Use system_unbound_wq for ring exit work, to avoid spawning tons of
#        these if we have tons of rings exiting at the same time
#     
#      - Fix req->flags overflow flag manipulation (Pavel)
#     
#     * tag 'io_uring-5.9-2020-08-21' of git://git.kernel.dk/linux-block:
#       io_uring: kill extra iovec=NULL in import_iovec()
#       io_uring: comment on kfree(iovec) checks
#       io_uring: fix racy req->flags modification
#       io_uring: use system_unbound_wq for ring exit work
#       io_uring: cleanup io_import_iovec() of pre-mapped request
#       io_uring: get rid of kiocb_wait_page_queue_init()
#       io_uring: find and cancel head link async work on files exit
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 f873db9acd3c92d4741bc3676c9eb511b2f9a6f6
# < make -s -j 24 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 24 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 24 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 24 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/signal.c: In function 'sig_handler_common':
/kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler':
/kisskb/src/arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:52.193027