# git rev-parse -q --verify 4a57a8400075bc5287c5c877702c68aeae2a033d^{commit}
4a57a8400075bc5287c5c877702c68aeae2a033d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4a57a8400075bc5287c5c877702c68aeae2a033d
# git clean -qxdf
# < git log -1
# commit 4a57a8400075bc5287c5c877702c68aeae2a033d
# Author: Ansgar Lößer <ansgar.loesser@tu-darmstadt.de>
# Date:   Wed Jul 13 20:51:44 2022 +0200
# 
#     vf/remap: return the amount of bytes actually deduplicated
#     
#     When using the FIDEDUPRANGE ioctl, in case of success the requested size
#     is returned. In some cases this might not be the actual amount of bytes
#     deduplicated.
#     
#     This change modifies vfs_dedupe_file_range() to report the actual amount
#     of bytes deduplicated, instead of the requested amount.
#     
#     Link: https://lore.kernel.org/linux-fsdevel/5548ef63-62f9-4f46-5793-03165ceccacc@tu-darmstadt.de/
#     Reported-by: Ansgar Lößer <ansgar.loesser@kom.tu-darmstadt.de>
#     Reported-by: Max Schlecht <max.schlecht@informatik.hu-berlin.de>
#     Reported-by: Björn Scheuermann <scheuermann@kom.tu-darmstadt.de>
#     Cc: Dave Chinner <david@fromorbit.com>
#     Cc: Darrick J Wong <djwong@kernel.org>
#     Signed-off-by: Ansgar Lößer <ansgar.loesser@kom.tu-darmstadt.de>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /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 4a57a8400075bc5287c5c877702c68aeae2a033d
# < make -s -j 32 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 32 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 32 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 32 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 
arch/x86/um/../kernel/module.o: In function `module_finalize':
module.c:(.text+0x434): undefined reference to `apply_returns'
collect2: error: ld returned 1 exit status
make[1]: *** [/kisskb/src/Makefile:1164: vmlinux] Error 1
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 32 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 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:44.052821