# git rev-parse -q --verify 8008293888188c3923f5bd8a69370dae25ed14e5^{commit}
8008293888188c3923f5bd8a69370dae25ed14e5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8008293888188c3923f5bd8a69370dae25ed14e5
# git clean -qxdf
# < git log -1
# commit 8008293888188c3923f5bd8a69370dae25ed14e5
# Author: Mel Gorman <mgorman@techsingularity.net>
# Date:   Fri Dec 31 13:10:09 2021 -0800
# 
#     mm: vmscan: reduce throttling due to a failure to make progress -fix
#     
#     Hugh Dickins reported the following
#     
#             My tmpfs swapping load (tweaked to use huge pages more heavily
#             than in real life) is far from being a realistic load: but it was
#             notably slowed down by your throttling mods in 5.16-rc, and this
#             patch makes it well again - thanks.
#     
#             But: it very quickly hit NULL pointer until I changed that last
#             line to
#     
#             if (first_pgdat)
#                     consider_reclaim_throttle(first_pgdat, sc);
#     
#     The likely issue is that huge pages are a major component of the test
#     workload.  When this is the case, first_pgdat may never get set if
#     compaction is ready to continue due to this check
#     
#             if (IS_ENABLED(CONFIG_COMPACTION) &&
#                 sc->order > PAGE_ALLOC_COSTLY_ORDER &&
#                 compaction_ready(zone, sc)) {
#                     sc->compaction_ready = true;
#                     continue;
#             }
#     
#     If this was true for every zone in the zonelist, first_pgdat would never
#     get set resulting in a NULL pointer exception.
#     
#     Link: https://lkml.kernel.org/r/20211209095453.GM3366@techsingularity.net
#     Fixes: 1b4e3f26f9f75 ("mm: vmscan: Reduce throttling due to a failure to make progress")
#     Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
#     Reported-by: Hugh Dickins <hughd@google.com>
#     Cc: Michal Hocko <mhocko@suse.com>
#     Cc: Vlastimil Babka <vbabka@suse.cz>
#     Cc: Rik van Riel <riel@surriel.com>
#     Cc: Mike Galbraith <efault@gmx.de>
#     Cc: Darrick J. Wong <djwong@kernel.org>
#     Cc: Shakeel Butt <shakeelb@google.com>
#     Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 8008293888188c3923f5bd8a69370dae25ed14e5
# < make -s -j 80 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  randconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_BPF_PRELOAD=n
# Added to kconfig 
# < make -s -j 80 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 80 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
.config:7328:warning: override: reassigning to symbol STANDALONE
.config:7331:warning: override: reassigning to symbol GCC_PLUGINS
# make -s -j 80 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
vmlinux.o: warning: objtool: check_preemption_disabled.isra.0()+0x5f: return with instrumentation enabled
/bin/sh: 1: zstd: not found
cat: write error: Broken pipe
make[3]: *** [/kisskb/src/arch/x86/boot/compressed/Makefile:136: arch/x86/boot/compressed/vmlinux.bin.zst] Error 127
make[3]: *** Deleting file 'arch/x86/boot/compressed/vmlinux.bin.zst'
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/arch/x86/boot/Makefile:115: arch/x86/boot/compressed/vmlinux] Error 2
make[1]: *** [/kisskb/src/arch/x86/Makefile:253: bzImage] Error 2
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 80 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:07:31.726944