# 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/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 4a57a8400075bc5287c5c877702c68aeae2a033d
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:6510:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11
# Build took: 0:05:53.934412