# git gc
# git rev-parse -q --verify f49aa1de98363b6c5fba4637678d6b0ba3d18065^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify f49aa1de98363b6c5fba4637678d6b0ba3d18065^{commit}
f49aa1de98363b6c5fba4637678d6b0ba3d18065
# git checkout -q -f -B kisskb f49aa1de98363b6c5fba4637678d6b0ba3d18065
# git clean -qxdf
# < git log -1
# commit f49aa1de98363b6c5fba4637678d6b0ba3d18065
# Merge: 78e03651849f 4e9845eff5a8
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon May 20 09:52:35 2019 -0700
# 
#     Merge tag 'for-5.2-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs fixes from David Sterba:
#      "Notable highlights:
#     
#        - fixes for some long-standing bugs in fsync that were quite hard to
#          catch but now finaly fixed
#     
#        - some fixups to error handling paths that did not properly clean up
#          (locking, memory)
#     
#        - fix to space reservation for inheriting properties"
#     
#     * tag 'for-5.2-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
#       Btrfs: tree-checker: detect file extent items with overlapping ranges
#       Btrfs: fix race between ranged fsync and writeback of adjacent ranges
#       Btrfs: avoid fallback to transaction commit during fsync of files with holes
#       btrfs: extent-tree: Fix a bug that btrfs is unable to add pinned bytes
#       btrfs: sysfs: don't leak memory when failing add fsid
#       btrfs: sysfs: Fix error path kobject memory leak
#       Btrfs: do not abort transaction at btrfs_update_root() after failure to COW path
#       btrfs: use the existing reserved items for our first prop for inheritance
#       btrfs: don't double unlock on error in btrfs_punch_hole
#       btrfs: Check the compression level before getting a workspace
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 f49aa1de98363b6c5fba4637678d6b0ba3d18065
# < make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  allnoconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:193:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/s390/kernel/machine_kexec.c:146:22: warning: 'do_start_kdump' defined but not used [-Wunused-function]
Completed OK
# rm -rf /kisskb/build/linus_s390-allnoconfig_s390x
# Build took: 0:03:35.857406