From: Honggang Li <enjoymind...@gmail.com> The patch based on linux-next-2014-06-02.
The old init_maps function does two things: 1) allocates and initializes one struct page array for bootmem 2) count the number of total pages After removed the source code related to the unnecessary array, the name 'init_maps' is some kind of improper named, as it just count the number of total page numbers. So, I renamed the function as 'mem_total_pages'. I tested the patch through repeat reboot the uml kernel many times. [real@name linux-next]$ make ARCH=um defconfig [real@name linux-next]$ make ARCH=um linux [real@name linux-next]$ file linux linux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not stripped [real@name linux-next]$ ./linux ubda=/home/real/linux-next/Fedora20-AMD64-root_fs mem=256m && sync && echo 1 [real@name linux-next]$ ./linux ubda=/home/real/linux-next/Fedora20-AMD64-root_fs mem=256m && sync && echo 2 (repeat reboot the uml kernel many times..) Honggang Li (1): delete unnecessary bootmem struct page array arch/um/include/shared/mem_user.h | 2 +- arch/um/kernel/physmem.c | 32 ++++++-------------------------- arch/um/kernel/um_arch.c | 7 +------ 3 files changed, 8 insertions(+), 33 deletions(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
