Nick Piggin b29acbdcf8 mm: vmalloc fix lazy unmapping cache aliasing ... Jim Radford has reported that the vmap subsystem rewrite was sometimes causing his VIVT ARM system to behave strangely (seemed like going into infinite loops trying to fault in pages to userspace). We determined that the problem was most likely due to a cache aliasing issue. flush_cache_vunmap was only being called at the moment the page tables were to be taken down, however with lazy unmapping, this can happen after the page has subsequently been freed and allocated for something else. The dangling alias may still have dirty data attached to it. The fix for this problem is to do the cache flushing when the caller has called vunmap -- it would be a bug for them to write anything else to the mapping at that point. That appeared to solve Jim's problems. Reported-by: Jim Radford <radford@blackbean.org> Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-12-01 19:55:23 -08:00
..
allocpercpu.c	mm/allocpercpu.c: make 4 functions static	2008-07-26 12:00:12 -07:00
backing-dev.c	mm: bdi: fix race in bdi_class device creation	2008-05-20 13:31:53 -07:00
bootmem.c	misc: replace __FUNCTION__ with __func__	2008-10-16 11:21:30 -07:00
bounce.c	highmem: use bio_has_data() in the bounce path	2008-10-09 08:56:01 +02:00
dmapool.c	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	2008-04-28 08:58:20 -07:00
fadvise.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
filemap.c	fs: remove prepare_write/commit_write	2008-10-30 11:38:45 -07:00
filemap_xip.c	mm: xip/ext2 fix block allocation race	2008-08-20 15:40:32 -07:00
fremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
highmem.c	x86, pat: avoid highmem cache attribute aliasing	2008-08-15 17:22:57 +02:00
hugetlb.c	hugetlb: make unmap_ref_private multi-size-aware	2008-11-12 17:17:16 -08:00
internal.h	hugetlb: pull gigantic page initialisation out of the default path	2008-11-06 15:41:18 -08:00
Kconfig	Unevictable LRU Infrastructure	2008-10-20 08:50:26 -07:00
maccess.c	kgdb: fix optional arch functions and probe_kernel_*	2008-04-17 20:05:39 +02:00
madvise.c	madvise: update function comment of madvise_dontneed	2008-07-30 09:41:45 -07:00
Makefile	memcg: allocate all page_cgroup at boot	2008-10-20 08:52:39 -07:00
memcontrol.c	memcg: fix page_cgroup allocation	2008-10-23 08:55:02 -07:00
memory.c	mm: remove duplicated #include's	2008-10-20 16:17:42 -07:00
memory_hotplug.c	meminit section warnings	2008-11-30 10:03:35 -08:00
mempolicy.c	mm: move migrate_prep out from under mmap_sem	2008-11-06 15:41:18 -08:00
mempool.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
migrate.c	migration: fix writepage error	2008-11-19 18:49:58 -08:00
mincore.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
mlock.c	unitialized return value in mm/mlock.c: __mlock_vma_pages_range()	2008-11-16 15:55:36 -08:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	parisc: fix find_extend_vma() breakage	2008-11-12 10:37:48 -08:00
mmu_notifier.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mmzone.c	mm: mark the correct zone as full when scanning zonelists	2008-09-13 14:41:52 -07:00
mprotect.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
msync.c
nommu.c	nfsd: fix vm overcommit crash	2008-10-30 11:38:47 -07:00
oom_kill.c	mm/oom_kill.c: fix badness() kerneldoc	2008-11-06 15:41:19 -08:00
page-writeback.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
page_alloc.c	cpusets: update mems allowed in page allocator	2008-11-12 17:17:16 -08:00
page_cgroup.c	meminit section warnings	2008-11-30 10:03:35 -08:00
page_io.c	mm: fix PageUptodate data race	2008-02-05 09:44:19 -08:00
page_isolation.c	memory hotplug: fix page_zone() calculation in test_pages_isolated()	2008-11-06 15:41:19 -08:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
pdflush.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
prio_tree.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
quicklist.c	mm: size of quicklists shouldn't be proportional to the number of CPUs	2008-09-02 19:21:38 -07:00
readahead.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
rmap.c	make mm/rmap.c:anon_vma_cachep static	2008-10-20 08:52:40 -07:00
shmem.c	nfsd: fix vm overcommit crash	2008-10-30 11:38:47 -07:00
shmem_acl.c	[PATCH] sanitize ->permission() prototype	2008-07-26 20:53:14 -04:00
slab.c	proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c	2008-10-23 15:20:06 +04:00
slob.c	SLOB: fix bogus ksize calculation fix	2008-10-09 12:18:27 -07:00
slub.c	proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c	2008-10-23 15:20:06 +04:00
sparse-vmemmap.c	vmemmap: warn about page_structs with remote distance	2008-11-06 15:41:19 -08:00
sparse.c	meminit section warnings	2008-11-30 10:03:35 -08:00
swap.c	swap: cull unevictable pages in fault path	2008-10-20 08:52:31 -07:00
swap_state.c	mm: pagecache insertion fewer atomics	2008-10-20 08:52:31 -07:00
swapfile.c	mm: page lock use lock bitops	2008-10-20 08:52:32 -07:00
thrash.c
tiny-shmem.c	Export tiny shmem_file_setup for DRM-GEM	2008-10-20 16:17:42 -07:00
truncate.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
util.c	mm: Make generic weak get_user_pages_fast and EXPORT_GPL it	2008-08-12 17:52:53 +10:00
vmalloc.c	mm: vmalloc fix lazy unmapping cache aliasing	2008-12-01 19:55:23 -08:00
vmscan.c	vmscan: protect zone rotation stats by lru lock	2008-12-01 07:58:06 -08:00
vmstat.c	proc: move /proc/zoneinfo boilerplate to mm/vmstat.c	2008-10-23 17:35:04 +04:00