# git rev-parse -q --verify cdc8fcb49905c0b67e355e027cb462ee168ffaa3^{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 cdc8fcb49905c0b67e355e027cb462ee168ffaa3^{commit}
cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# git checkout -q -f -B kisskb cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# git clean -qxdf
# < git log -1
# commit cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# Merge: 382625d0d432 fa15bafb71fd
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Aug 3 13:01:22 2020 -0700
# 
#     Merge tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block
#     
#     Pull io_uring updates from Jens Axboe:
#      "Lots of cleanups in here, hardening the code and/or making it easier
#       to read and fixing bugs, but a core feature/change too adding support
#       for real async buffered reads. With the latter in place, we just need
#       buffered write async support and we're done relying on kthreads for
#       the fast path. In detail:
#     
#        - Cleanup how memory accounting is done on ring setup/free (Bijan)
#     
#        - sq array offset calculation fixup (Dmitry)
#     
#        - Consistently handle blocking off O_DIRECT submission path (me)
#     
#        - Support proper async buffered reads, instead of relying on kthread
#          offload for that. This uses the page waitqueue to drive retries
#          from task_work, like we handle poll based retry. (me)
#     
#        - IO completion optimizations (me)
#     
#        - Fix race with accounting and ring fd install (me)
#     
#        - Support EPOLLEXCLUSIVE (Jiufei)
#     
#        - Get rid of the io_kiocb unionizing, made possible by shrinking
#          other bits (Pavel)
#     
#        - Completion side cleanups (Pavel)
#     
#        - Cleanup REQ_F_ flags handling, and kill off many of them (Pavel)
#     
#        - Request environment grabbing cleanups (Pavel)
#     
#        - File and socket read/write cleanups (Pavel)
#     
#        - Improve kiocb_set_rw_flags() (Pavel)
#     
#        - Tons of fixes and cleanups (Pavel)
#     
#        - IORING_SQ_NEED_WAKEUP clear fix (Xiaoguang)"
#     
#     * tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block: (127 commits)
#       io_uring: flip if handling after io_setup_async_rw
#       fs: optimise kiocb_set_rw_flags()
#       io_uring: don't touch 'ctx' after installing file descriptor
#       io_uring: get rid of atomic FAA for cq_timeouts
#       io_uring: consolidate *_check_overflow accounting
#       io_uring: fix stalled deferred requests
#       io_uring: fix racy overflow count reporting
#       io_uring: deduplicate __io_complete_rw()
#       io_uring: de-unionise io_kiocb
#       io-wq: update hash bits
#       io_uring: fix missing io_queue_linked_timeout()
#       io_uring: mark ->work uninitialised after cleanup
#       io_uring: deduplicate io_grab_files() calls
#       io_uring: don't do opcode prep twice
#       io_uring: clear IORING_SQ_NEED_WAKEUP after executing task works
#       io_uring: batch put_task_struct()
#       tasks: add put_task_struct_many()
#       io_uring: return locked and pinned page accounting
#       io_uring: don't miscount pinned memory
#       io_uring: don't open-code recv kbuf managment
#       ...
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xAD192B6
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  help
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  olddefconfig
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:26: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:26: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
/kisskb/src/drivers/mailbox/imx-mailbox.c:601:12: warning: 'imx_mu_suspend_noirq' defined but not used [-Wunused-function]
 static int imx_mu_suspend_noirq(struct device *dev)
            ^
/kisskb/src/drivers/mailbox/imx-mailbox.c:611:12: warning: 'imx_mu_resume_noirq' defined but not used [-Wunused-function]
 static int imx_mu_resume_noirq(struct device *dev)
            ^
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4
# Build took: 0:04:57.693641