# git rev-parse -q --verify f8ad8187c3b536ee2b10502a8340c014204a1af0^{commit}
f8ad8187c3b536ee2b10502a8340c014204a1af0
already have revision, skipping fetch
# git checkout -q -f -B kisskb f8ad8187c3b536ee2b10502a8340c014204a1af0
# git clean -qxdf
# < git log -1
# commit f8ad8187c3b536ee2b10502a8340c014204a1af0
# Author: Johannes Berg <johannes@sipsolutions.net>
# Date:   Mon Jan 25 10:16:15 2021 +0100
# 
#     fs/pipe: allow sendfile() to pipe again
#     
#     After commit 36e2c7421f02 ("fs: don't allow splice read/write
#     without explicit ops") sendfile() could no longer send data
#     from a real file to a pipe, breaking for example certain cgit
#     setups (e.g. when running behind fcgiwrap), because in this
#     case cgit will try to do exactly this: sendfile() to a pipe.
#     
#     Fix this by using iter_file_splice_write for the splice_write
#     method of pipes, as suggested by Christoph.
#     
#     Cc: stable@vger.kernel.org
#     Fixes: 36e2c7421f02 ("fs: don't allow splice read/write without explicit ops")
#     Suggested-by: Christoph Hellwig <hch@lst.de>
#     Reviewed-by: Christoph Hellwig <hch@lst.de>
#     Tested-by: Johannes Berg <johannes@sipsolutions.net>
#     Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 f8ad8187c3b536ee2b10502a8340c014204a1af0
# < make -s -j 32 ARCH=arm O=/kisskb/build/linus_mxs_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  mxs_defconfig
# < make -s -j 32 ARCH=arm O=/kisskb/build/linus_mxs_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  help
# make -s -j 32 ARCH=arm O=/kisskb/build/linus_mxs_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  olddefconfig
# make -s -j 32 ARCH=arm O=/kisskb/build/linus_mxs_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
Completed OK
# rm -rf /kisskb/build/linus_mxs_defconfig_arm-gcc4.9
# Build took: 0:02:00.683950