kernel-ark/mm
Nick Piggin d992895ba2 [PATCH] Lazy page table copies in fork()
Defer copying of ptes until fault time when it is possible to reconstruct
the pte from backing store. Idea from Andi Kleen and Nick Piggin.

Thanks to input from Rik van Riel and Linus and to Hugh for correcting
my blundering.

Ray Fucillo <fucillo@intersystems.com> reports:

  "I applied this latest patch to a 2.6.12 kernel and found that it does
   resolve the problem.  Prior to the patch on this machine, I was
   seeing about 23ms spent in fork for ever 100MB of shared memory
   segment.

   After applying the patch, fork is taking about 1ms regardless of the
   shared memory size."

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-29 17:25:04 -07:00
..
bootmem.c
fadvise.c
filemap_xip.c
filemap.c
filemap.h
fremap.c
highmem.c
hugetlb.c [PATCH] Fix hugepage crash on failing mmap() 2005-08-05 12:22:37 -07:00
internal.h
Kconfig
madvise.c
Makefile
memory.c [PATCH] Lazy page table copies in fork() 2005-08-29 17:25:04 -07:00
mempolicy.c [PATCH] sys_set_mempolicy() doesnt check if mode < 0 2005-08-01 21:38:00 -07:00
mempool.c
mincore.c
mlock.c
mmap.c [PATCH] __vm_enough_memory() signedness fix 2005-08-04 21:43:14 -07:00
mprotect.c
mremap.c [PATCH] fix VmSize and VmData after mremap 2005-08-04 13:11:15 -07:00
msync.c
nommu.c [PATCH] __vm_enough_memory() signedness fix 2005-08-04 21:43:14 -07:00
oom_kill.c
page_alloc.c
page_io.c
page-writeback.c
pdflush.c
prio_tree.c
readahead.c
rmap.c
shmem.c Fix nasty ncpfs symlink handling bug. 2005-08-19 18:02:56 -07:00
slab.c
sparse.c
swap_state.c
swap.c
swapfile.c
thrash.c
tiny-shmem.c
truncate.c
vmalloc.c
vmscan.c