This patchset remove vm_struct list management after initializing vmalloc. Adding and removing an entry to vmlist is linear time complexity, so it is inefficient. If we maintain this list, overall time complexity of adding and removing area to vmalloc space is O(N), although we use rbtree for finding vacant place and it's time complexity is just O(logN). And vmlist and vmlist_lock is used many places of outside of vmalloc.c. It is preferable that we hide this raw data structure and provide well-defined function for supporting them, because it makes that they cannot mistake when manipulating theses structure and it makes us easily maintain vmalloc layer. For kexec and makedumpfile, I export vmap_area_list, instead of vmlist. This comes from Atsushi's recommendation. For more information, please refer below link. https://lkml.org/lkml/2012/12/6/184 These are based on v3.9-rc2. Changes from v1 5/8: skip areas for lazy_free 6/8: skip areas for lazy_free 7/8: export vmap_area_list for kexec, instead of vmlist Joonsoo Kim (8): mm, vmalloc: change iterating a vmlist to find_vm_area() mm, vmalloc: move get_vmalloc_info() to vmalloc.c mm, vmalloc: protect va->vm by vmap_area_lock mm, vmalloc: iterate vmap_area_list, instead of vmlist in vread/vwrite() mm, vmalloc: iterate vmap_area_list in get_vmalloc_info() mm, vmalloc: iterate vmap_area_list, instead of vmlist, in vmallocinfo() mm, vmalloc: export vmap_area_list, instead of vmlist mm, vmalloc: remove list management of vmlist after initializing vmalloc arch/tile/mm/pgtable.c | 7 +- arch/unicore32/mm/ioremap.c | 17 ++-- arch/x86/mm/ioremap.c | 7 +- fs/proc/Makefile | 2 +- fs/proc/internal.h | 18 ---- fs/proc/meminfo.c | 1 + fs/proc/mmu.c | 60 ------------- include/linux/vmalloc.h | 21 ++++- kernel/kexec.c | 2 +- mm/nommu.c | 3 +- mm/vmalloc.c | 207 +++++++++++++++++++++++++++++-------------- 11 files changed, 170 insertions(+), 175 deletions(-) delete mode 100644 fs/proc/mmu.c -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>