kernel-fxtec-pro1x/arch/x86/mm
Linus Torvalds 9b79022ca9 Fix 'get_user_pages_fast()' with non-page-aligned start address
Alexey Dobriyan reported trouble with LTP with the new fast-gup code,
and Johannes Weiner debugged it to non-page-aligned addresses, where the
new get_user_pages_fast() code would do all the wrong things, including
just traversing past the end of the requested area due to 'addr' never
matching 'end' exactly.

This is not a pretty fix, and we may actually want to move the alignment
into generic code, leaving just the core code per-arch, but Alexey
verified that the vmsplice01 LTP test doesn't crash with this.

Reported-and-tested-by: Alexey Dobriyan <adobriyan@gmail.com>
Debugged-by: Johannes Weiner <hannes@saeurebad.de>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-28 17:54:21 -07:00
..
discontig_32.c
dump_pagetables.c
extable.c
fault.c
gup.c
highmem_32.c
hugetlbpage.c
init_32.c
init_64.c
ioremap.c
k8topology_64.c
kmmio.c
Makefile
memtest.c
mmap.c
mmio-mod.c
numa_64.c
pageattr-test.c
pageattr.c
pat.c
pf_in.c
pf_in.h
pgtable.c
pgtable_32.c
srat_32.c
srat_64.c
testmmiotrace.c