# 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/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 f8ad8187c3b536ee2b10502a8340c014204a1af0
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig+UP_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64_defconfig
# Added to kconfig CONFIG_SMP=n
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig+UP_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig+UP_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig+UP_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/drivers/net/ethernet/chelsio/cxgb4/sge.c: In function 'cxgb4_write_partial_sgl':
/kisskb/src/drivers/net/ethernet/chelsio/cxgb4/sge.c:910:9: warning: missing braces around initializer [-Wmissing-braces]
  struct ulptx_sge_pair buf[MAX_SKB_FRAGS / 2 + 1] = {0}, *to;
         ^
/kisskb/src/drivers/net/ethernet/chelsio/cxgb4/sge.c:910:9: warning: (near initialization for 'buf[0]') [-Wmissing-braces]
/kisskb/src/fs/btrfs/tree-checker.c: In function 'check_root_item':
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: missing braces around initializer [-Wmissing-braces]
  struct btrfs_root_item ri = { 0 };
         ^
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: (near initialization for 'ri.inode') [-Wmissing-braces]
Completed OK
# rm -rf /kisskb/build/linus_ppc64_defconfig+UP_powerpc-gcc4.9
# Build took: 0:04:23.937428