Dan Williams 0abdd7a81b dma-debug: introduce debug_dma_assert_idle() ... Record actively mapped pages and provide an api for asserting a given page is dma inactive before execution proceeds. Placing debug_dma_assert_idle() in cow_user_page() flagged the violation of the dma-api in the NET_DMA implementation (see commit 7787380336 "net_dma: mark broken"). The implementation includes the capability to count, in a limited way, repeat mappings of the same page that occur without an intervening unmap. This 'overlap' counter is limited to the few bits of tag space in a radix tree. This mechanism is added to mitigate false negative cases where, for example, a page is dma mapped twice and debug_dma_assert_idle() is called after the page is un-mapped once. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-01-21 16:19:41 -08:00
..
backing-dev.c	mm/backing-dev.c: check user buffer length before copying data to the related user buffer	2013-09-11 15:58:03 -07:00
balloon_compaction.c
bootmem.c	mm/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
bounce.c	mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored	2013-09-30 14:31:02 -07:00
cleancache.c	mm: cleancache: clean up cleancache_enabled	2013-04-30 17:04:01 -07:00
compaction.c	mm/compaction: respect ignore_skip_hint in update_pageblock_skip	2013-12-18 19:04:52 -08:00
debug-pagealloc.c
dmapool.c
fadvise.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
failslab.c
filemap.c	mm: drop actor argument of do_generic_file_read()	2013-11-15 09:32:13 +09:00
filemap_xip.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
fremap.c	mm: fix use-after-free in sys_remap_file_pages	2014-01-02 14:40:30 -08:00
frontswap.c	frontswap: fix incorrect zeroing and allocation size for frontswap_map	2013-06-12 16:29:46 -07:00
highmem.c
huge_memory.c	thp: fix copy_page_rep GPF by testing is_huge_zero_pmd once only	2014-01-12 16:47:15 +07:00
hugetlb.c	mm: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
hugetlb_cgroup.c	cgroup: pass around cgroup_subsys_state instead of cgroup in file methods	2013-08-08 20:11:24 -04:00
hwpoison-inject.c	mm/hwpoison: fix the lack of one reference count against poisoned page	2013-09-30 14:31:03 -07:00
init-mm.c
internal.h	mm: vmscan: fix do_try_to_free_pages() livelock	2013-09-11 15:58:01 -07:00
interval_tree.c
Kconfig	mm: add missing dependency in Kconfig	2013-12-18 19:04:52 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
ksm.c	ksm: remove redundant __GFP_ZERO from kcalloc	2013-11-13 12:09:02 +09:00
list_lru.c	mm: list_lru: fix almost infinite loop causing effective livelock	2013-10-30 12:57:46 -07:00
maccess.c
madvise.c	mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood	2013-09-30 14:31:02 -07:00
Makefile	list: add a new LRU list type	2013-09-10 18:56:30 -04:00
memblock.c	mm/memblock.c: introduce bottom-up allocation mode	2013-11-13 12:09:08 +09:00
memcontrol.c	memcg: fix memcg_size() calculation	2014-01-02 14:40:30 -08:00
memory-failure.c	mm/memory-failure.c: transfer page count from head page to tail page after split thp	2014-01-02 14:40:30 -08:00
memory.c	dma-debug: introduce debug_dma_assert_idle()	2014-01-21 16:19:41 -08:00
memory_hotplug.c	mem-hotplug: introduce movable_node boot option	2013-11-13 12:09:09 +09:00
mempolicy.c	mm/mempolicy: fix !vma in new_vma_page()	2013-12-18 19:04:52 -08:00
mempool.c	mm/mempool.c: convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)	2013-09-11 15:58:14 -07:00
migrate.c	aio/migratepages: make aio migrate pages sane	2013-12-21 17:56:08 -05:00
mincore.c
mlock.c	mm: munlock: fix deadlock in __munlock_pagevec()	2014-01-02 14:40:30 -08:00
mm_init.c	mm: numa: Change page last {nid,pid} into {cpu,pid}	2013-10-09 14:47:45 +02:00
mmap.c	mm: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
mmu_context.c	mm: remove old aio use_mm() comment	2013-05-07 18:38:27 -07:00
mmu_notifier.c	treewide: relase -> release	2013-06-28 14:34:33 +02:00
mmzone.c	mm: numa: Change page last {nid,pid} into {cpu,pid}	2013-10-09 14:47:45 +02:00
mprotect.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
mremap.c	mm: revert mremap pud_free anti-fix	2013-10-16 21:35:53 -07:00
msync.c
nobootmem.c	mm/nobootmem.c: have __free_pages_memory() free in larger chunks.	2013-11-13 12:09:04 +09:00
nommu.c	Merge branch 'akpm' (patches from Andrew Morton)	2013-11-13 15:45:43 +09:00
oom_kill.c	mm: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
page-writeback.c	writeback: fix negative bdi max pause	2013-10-16 21:35:53 -07:00
page_alloc.c	mm: page_alloc: revert NUMA aspect of fair allocation policy	2013-12-20 12:19:18 -08:00
page_cgroup.c
page_io.c	aio: Kill aio_rw_vect_retry()	2013-07-30 11:53:12 -04:00
page_isolation.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
pagewalk.c	mm/pagewalk.c: fix walk_page_range() access of wrong PTEs	2013-10-30 14:27:03 -07:00
percpu-km.c
percpu-vm.c
percpu.c	percpu: fix bootmem error handling in pcpu_page_first_chunk()	2013-09-23 10:51:45 -04:00
pgtable-generic.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
process_vm_access.c	Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys	2013-03-12 11:05:45 -07:00
quicklist.c
readahead.c	readahead: fix sequential read cache miss detection	2013-11-13 12:09:09 +09:00
rmap.c	mm/hugetlb: check for pte NULL pointer in __page_check_address()	2013-12-18 19:04:52 -08:00
shmem.c	security: shmem: implement kernel private shmem inodes	2013-12-02 11:24:19 +00:00
slab.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-11-22 08:10:34 -08:00
slab.h	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
slab_common.c	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
slob.c	mm/sl[aou]b: Move kmallocXXX functions to common code	2013-09-04 20:51:33 +03:00
slub.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-11-22 08:10:34 -08:00
sparse-vmemmap.c	sparse-vmemmap: specify vmemmap population range in bytes	2013-04-29 15:54:35 -07:00
sparse.c	mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP	2013-11-13 12:09:06 +09:00
swap.c	mm: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
swap_state.c	lib/radix-tree.c: make radix_tree_node_alloc() work correctly within interrupt	2013-09-11 15:59:36 -07:00
swapfile.c	frontswap: enable call to invalidate area on swapoff	2013-11-13 12:09:07 +09:00
truncate.c	truncate: drop 'oldsize' truncate_pagecache() parameter	2013-09-12 15:38:02 -07:00
util.c	mm: fix crash when using XFS on loopback	2014-01-15 14:19:42 +07:00
vmalloc.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
vmpressure.c	Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-09-03 18:25:03 -07:00
vmscan.c	mm/vmscan.c: don't forget to free shrinker->nr_deferred	2013-10-16 21:35:52 -07:00
vmstat.c	mm: numa: return the number of base pages altered by protection changes	2013-11-13 12:09:11 +09:00
zbud.c	mm/zbud: fix some trivial typos in comments	2013-09-11 15:57:35 -07:00
zswap.c	mm/zswap: refactor the get/put routines	2013-11-13 12:09:11 +09:00