# git rev-parse -q --verify fff75eb2a08c2ac96404a2d79685668f3cf5a7a3^{commit}
fff75eb2a08c2ac96404a2d79685668f3cf5a7a3
already have revision, skipping fetch
# git checkout -q -f -B kisskb fff75eb2a08c2ac96404a2d79685668f3cf5a7a3
# git clean -qxdf
# < git log -1
# commit fff75eb2a08c2ac96404a2d79685668f3cf5a7a3
# Merge: 8188fc8 b4678df1
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Apr 30 16:53:40 2018 -0700
# 
#     Merge tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
#     
#     Pull errseq infrastructure fix from Jeff Layton:
#      "The PostgreSQL developers recently had a spirited discussion about the
#       writeback error handling in Linux, and reached out to us about a
#       behavoir change to the code that bit them when the errseq_t changes
#       were merged.
#     
#       When we changed to using errseq_t for tracking writeback errors, we
#       lost the ability for an application to see a writeback error that
#       occurred before the open on which the fsync was issued. This was
#       problematic for PostgreSQL which offloads fsync calls to a completely
#       separate process from the DB writers.
#     
#       This patch restores that ability. If the errseq_t value in the inode
#       does not have the SEEN flag set, then we just return 0 for the sample.
#       That ensures that any recorded error is always delivered at least
#       once.
#     
#       Note that we might still lose the error if the inode gets evicted from
#       the cache before anything can reopen it, but that was the case before
#       errseq_t was merged. At LSF/MM we had some discussion about keeping
#       inodes with unreported writeback errors around in the cache for longer
#       (possibly indefinitely), but that's really a separate problem"
#     
#     * tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
#       errseq: Always report a writeback error once
# < /opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-gcc --version
# < git log --format=%s --max-count=1 fff75eb2a08c2ac96404a2d79685668f3cf5a7a3
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_powernv_defconfig+THIN_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  powernv_defconfig
# Added to kconfig CONFIG_USE_THIN_ARCHIVES=y
# yes \n | make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_powernv_defconfig+THIN_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_powernv_defconfig+THIN_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  
WARNING: modpost: Found 2 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/linus_powernv_defconfig+THIN_ppc64le
# Build took: 0:01:18.501652