# git rev-parse -q --verify 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3^{commit}
3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# git clean -qxdf
# < git log -1
# commit 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# Author: Kent Overstreet <kent.overstreet@gmail.com>
# Date:   Fri Dec 18 04:07:11 2020 -0500
# 
#     mm/filemap: fix infinite loop in generic_file_buffered_read()
#     
#     If iter->count is 0 and iocb->ki_pos is page aligned, this causes
#     nr_pages to be 0.
#     
#     Then in generic_file_buffered_read_get_pages() find_get_pages_contig()
#     returns 0 - because we asked for 0 pages, so we call
#     generic_file_buffered_read_no_cached_page() which attempts to add a page
#     to the page cache, which fails with -EEXIST, and then we loop. Oops...
#     
#     Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
#     Reported-by: Jens Axboe <axboe@kernel.dk>
#     Reviewed-by: Jens Axboe <axboe@kernel.dk>
#     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 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  corenet32_smp_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xe6a73c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xf00000)
Image Name:   Linux-5.10.0-g3644e2d2dda7
Created:      Sat Dec 19 10:54:00 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    6793797 Bytes = 6634.57 KiB = 6.48 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9
# Build took: 0:01:20.460077