# git rev-parse -q --verify b08968f196d498b19e9d0841d76a03862258f2d8^{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 b08968f196d498b19e9d0841d76a03862258f2d8^{commit}
b08968f196d498b19e9d0841d76a03862258f2d8
# git checkout -q -f -B kisskb b08968f196d498b19e9d0841d76a03862258f2d8
# git clean -qxdf
# < git log -1
# commit b08968f196d498b19e9d0841d76a03862258f2d8
# Author: David Howells <dhowells@redhat.com>
# Date:   Thu Mar 3 13:05:18 2022 +0000
# 
#     cachefiles: Fix incorrect length to fallocate()
#     
#     When cachefiles_shorten_object() calls fallocate() to shape the cache
#     file to match the DIO size, it passes the total file size it wants to
#     achieve, not the amount of zeros that should be inserted.  Since this is
#     meant to preallocate that amount of storage for the file, it can cause
#     the cache to fill up the disk and hit ENOSPC.
#     
#     Fix this by passing the length actually required to go from the current
#     EOF to the desired EOF.
#     
#     Fixes: 7623ed6772de ("cachefiles: Implement cookie resize for truncate")
#     Reported-by: Jeffle Xu <jefflexu@linux.alibaba.com>
#     Signed-off-by: David Howells <dhowells@redhat.com>
#     Tested-by: Jeff Layton <jlayton@kernel.org>
#     Reviewed-by: Jeff Layton <jlayton@kernel.org>
#     cc: linux-cachefs@redhat.com
#     Link: https://lore.kernel.org/r/164630854858.3665356.17419701804248490708.stgit@warthog.procyon.org.uk # v1
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 b08968f196d498b19e9d0841d76a03862258f2d8
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=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_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4612:warning: override: reassigning to symbol STANDALONE
.config:4615:warning: override: reassigning to symbol CPU_BIG_ENDIAN
.config:4615:warning: override: CPU_BIG_ENDIAN changes choice state
.config:4617:warning: override: reassigning to symbol PPC_DISABLE_WERROR
.config:4619:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
.config:4621:warning: override: reassigning to symbol GCC_PLUGINS
.config:4622:warning: override: reassigning to symbol LD_HEAD_STUB_CATCH
.config:4624:warning: override: reassigning to symbol UBSAN
# make -s -j 32 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
BTF: .tmp_vmlinux.btf: pahole version v1.12 is too old, need at least v1.16
Failed to generate BTF for vmlinux
Try to disable CONFIG_DEBUG_INFO_BTF
make[1]: *** [/kisskb/src/Makefile:1155: vmlinux] Error 1
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 32 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc11
# Build took: 0:05:03.707709