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 ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
