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Jerome Marchand 2d30d31ea3 swap: redirty page if page write fails on swap file 
Since commit 62c230bc1790 ("mm: add support for a filesystem to activate
swap files and use direct_IO for writing swap pages"), swap_writepage()
calls direct_IO on swap files.  However, in that case the page isn't
redirtied if I/O fails, and is therefore handled afterwards as if it has
been successfully written to the swap file, leading to memory corruption
when the page is eventually swapped back in.

This patch sets the page dirty when direct_IO() fails.  It fixes a
memory corruption that happened while using swap-over-NFS.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>	[3.6+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 15:54:39 -07:00
..
backing-dev.c
bdi: allow block devices to say that they require stable page writes
2013-02-21 17:22:19 -08:00
balloon_compaction.c
mm: introduce a common interface for balloon pages mobility
2012-12-11 17:22:26 -08:00
bootmem.c
mm: Add alloc_bootmem_low_pages_nopanic()
2013-01-29 19:32:59 -08:00
bounce.c
mm: make snapshotting pages for stable writes a per-bio operation
2013-04-29 15:54:33 -07:00
cleancache.c
fs: encode_fh: return FILEID_INVALID if invalid fid_type
2013-02-26 02:46:10 -05:00
compaction.c
mm: add & use zone_end_pfn() and zone_spans_pfn()
2013-02-23 17:50:20 -08:00
debug-pagealloc.c
mm, x86: Remove debug_pagealloc_enabled
2011-12-06 09:24:07 +01:00
dmapool.c
dmapool: make DMAPOOL_DEBUG detect corruption of free marker
2012-12-11 17:22:24 -08:00
fadvise.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
failslab.c
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
filemap_xip.c
mm: move all mmu notifier invocations to be done outside the PT lock
2012-10-09 16:22:58 +09:00
filemap.c
fs: fix fsync() error reporting
2013-04-29 15:54:38 -07:00
fremap.c
Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"
2013-03-28 17:45:51 -07:00
frontswap.c
frontswap: support exclusive gets if tmem backend is capable
2012-09-21 10:38:12 -04:00
highmem.c
Some nice cleanups, and even a patch my wife did as a "live" demo for
2012-12-20 08:37:05 -08:00
huge_memory.c
thp: fix huge zero page logic for page with pfn == 0
2013-04-29 15:54:39 -07:00
hugetlb_cgroup.c
mm/hugetlb: create hugetlb cgroup file in hugetlb_init
2012-12-18 15:02:15 -08:00
hugetlb.c
mm, hugetlb: include hugepages in meminfo
2013-04-29 15:54:35 -07:00
hwpoison-inject.c
memcg: rename config variables
2012-07-31 18:42:43 -07:00
init-mm.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
internal.h
mm: accelerate munlock() treatment of THP pages
2013-02-27 19:10:09 -08:00
interval_tree.c
mm: add CONFIG_DEBUG_VM_RB build option
2012-10-09 16:22:42 +09:00
Kconfig
Select VIRT_TO_BUS directly where needed
2013-03-12 11:16:40 -07:00
Kconfig.debug
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck.c
…
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
ksm.c
ksm: fix m68k build: only NUMA needs pfn_to_nid
2013-03-08 15:05:34 -08:00
maccess.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
madvise.c
mm: madvise: complete input validation before taking lock
2013-04-29 15:54:37 -07:00
Makefile
memcg: add memory.pressure_level events
2013-04-29 15:54:38 -07:00
memblock.c
memblock: fix missing comment of memblock_insert_region()
2013-04-29 15:54:38 -07:00
memcontrol.c
mm, memcg: give exiting processes access to memory reserves
2013-04-29 15:54:39 -07:00
memory_hotplug.c
mm, hotplug: avoid compiling memory hotremove functions when disabled
2013-04-29 15:54:37 -07:00
memory-failure.c
HWPOISON: check dirty flag to match against clean page
2013-04-29 15:54:28 -07:00
memory.c
THP: fix comment about memory barrier
2013-04-29 15:54:37 -07:00
mempolicy.c
mm/mempolicy.c: fix sp_node_init() argument ordering
2013-03-08 15:05:34 -08:00
mempool.c
mempool: add @gfp_mask to mempool_create_node()
2012-06-25 11:53:47 +02:00
migrate.c
mm: rewrite the comment over migrate_pages() more comprehensibly
2013-04-29 15:54:37 -07:00
mincore.c
swap: make each swap partition have one address_space
2013-02-23 17:50:17 -08:00
mlock.c
Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"
2013-03-28 17:45:51 -07:00
mm_init.c
mm: init: report on last-nid information stored in page->flags
2013-02-23 17:50:18 -08:00
mmap.c
mm/mmap: check for RLIMIT_AS before unmapping
2013-04-29 15:54:38 -07:00
mmu_context.c
mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()
2012-03-21 17:54:59 -07:00
mmu_notifier.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
mmzone.c
mm: rename page struct field helpers
2013-02-23 17:50:18 -08:00
mprotect.c
mm/mprotect.c: coding-style cleanups
2012-12-18 15:02:15 -08:00
mremap.c
mm/rmap: rename anon_vma_unlock() => anon_vma_unlock_write()
2013-02-23 17:50:17 -08:00
msync.c
…
nobootmem.c
mm: Add alloc_bootmem_low_pages_nopanic()
2013-01-29 19:32:59 -08:00
nommu.c
mm: replace hardcoded 3% with admin_reserve_pages knob
2013-04-29 15:54:36 -07:00
oom_kill.c
memcg, oom: provide more precise dump info while memcg oom happening
2013-02-23 17:50:08 -08:00
page_alloc.c
page_alloc: make setup_nr_node_ids() usable for arch init code
2013-04-29 15:54:36 -07:00
page_cgroup.c
memcontrol: use N_MEMORY instead N_HIGH_MEMORY
2012-12-12 17:38:32 -08:00
page_io.c
swap: redirty page if page write fails on swap file
2013-04-29 15:54:39 -07:00
page_isolation.c
mm: fix zone_watermark_ok_safe() accounting of isolated pages
2013-01-04 16:11:46 -08:00
page-writeback.c
mm: make snapshotting pages for stable writes a per-bio operation
2013-04-29 15:54:33 -07:00
pagewalk.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
percpu-km.c
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
percpu-vm.c
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
percpu.c
mm, percpu: Make sure percpu_alloc early parameter has an argument
2012-12-02 06:23:04 -08:00
pgtable-generic.c
mm: Only flush the TLB when clearing an accessible pte
2012-12-11 14:28:34 +00:00
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
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
readahead.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
rmap.c
rmap: recompute pgoff for unmapping huge page
2013-04-29 15:54:28 -07:00
shmem.c
mm/shmem.c: remove an ifdef
2013-04-29 15:54:28 -07:00
slab_common.c
slab: propagate tunable values
2012-12-18 15:02:14 -08:00
slab.c
taint: add explicit flag to show whether lock dep is still OK.
2013-01-21 17:17:57 +10:30
slab.h
slab: propagate tunable values
2012-12-18 15:02:14 -08:00
slob.c
mm: rename page struct field helpers
2013-02-23 17:50:18 -08:00
slub.c
mm/slub.c: use register_hotmemory_notifier()
2013-04-29 15:54:36 -07:00
sparse-vmemmap.c
sparse-vmemmap: specify vmemmap population range in bytes
2013-04-29 15:54:35 -07:00
sparse.c
mm, hotplug: avoid compiling memory hotremove functions when disabled
2013-04-29 15:54:37 -07:00
swap_state.c
mm: thp: add split tail pages to shrink page list in page reclaim
2013-04-29 15:54:38 -07:00
swap.c
mm: thp: add split tail pages to shrink page list in page reclaim
2013-04-29 15:54:38 -07:00
swapfile.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
truncate.c
mm: drop vmtruncate
2012-12-20 18:46:29 -05:00
util.c
swap: make each swap partition have one address_space
2013-02-23 17:50:17 -08:00
vmalloc.c
kexec, vmalloc: export additional vmalloc layer information
2013-04-29 15:54:34 -07:00
vmpressure.c
memcg: add memory.pressure_level events
2013-04-29 15:54:38 -07:00
vmscan.c
mm: thp: add split tail pages to shrink page list in page reclaim
2013-04-29 15:54:38 -07:00
vmstat.c
mm/vmstat: add note on safety of drain_zonestat
2013-04-29 15:54:38 -07:00