Linus Torvalds 95042f9eb7 vm: fix mlock() on stack guard page ... Commit 53a7706d5e ("mlock: do not hold mmap_sem for extended periods of time") changed mlock() to care about the exact number of pages that __get_user_pages() had brought it. Before, it would only care about errors. And that doesn't work, because we also handled one page specially in __mlock_vma_pages_range(), namely the stack guard page. So when that case was handled, the number of pages that the function returned was off by one. In particular, it could be zero, and then the caller would end up not making any progress at all. Rather than try to fix up that off-by-one error for the mlock case specially, this just moves the logic to handle the stack guard page into__get_user_pages() itself, thus making all the counts come out right automatically. Reported-by: Robert Święcki <robert@swiecki.net> Cc: Hugh Dickins <hughd@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-04-12 14:15:51 -07:00
..
Kconfig	mm: compaction: don't depend on HUGETLB_PAGE	2011-01-26 10:50:02 +10:00
Kconfig.debug	mm: debug-pagealloc: fix kconfig dependency warning	2011-03-22 17:44:02 -07:00
Makefile	bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c	2011-02-24 14:43:05 +01:00
backing-dev.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
bootmem.c	crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn	2011-03-23 19:47:19 -07:00
bounce.c	bounce: call flush_dcache_page() after bounce_copy_vec()	2010-09-09 18:57:25 -07:00
compaction.c	mm: compaction: minimise the time IRQs are disabled while isolating pages for migration	2011-03-22 17:44:05 -07:00
debug-pagealloc.c	generic debug pagealloc	2009-04-01 08:59:13 -07:00
dmapool.c	mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()	2011-01-13 17:32:48 -08:00
fadvise.c	readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM	2010-03-06 11:26:25 -08:00
failslab.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
filemap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2011-03-24 19:01:30 -07:00
filemap_xip.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
fremap.c	Avoid pgoff overflow in remap_file_pages	2010-09-25 09:34:58 -07:00
highmem.c	mm,x86: fix kmap_atomic_push vs ioremap_32.c	2010-10-27 18:03:05 -07:00
huge_memory.c	mm: use __GFP_OTHER_NODE for transparent huge pages	2011-03-22 17:44:05 -07:00
hugetlb.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
hwpoison-inject.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
init-mm.c	mm: provide init_mm mm_context initializer	2010-08-09 20:44:54 -07:00
internal.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c	kmemleak: remove memset by using kzalloc	2011-01-27 18:31:51 +00:00
kmemleak.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
ksm.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
maccess.c	MN10300: Save frame pointer in thread_info struct rather than global var	2010-10-27 17:29:01 +01:00
madvise.c	thp: khugepaged: make khugepaged aware about madvise	2011-01-13 17:32:47 -08:00
memblock.c	mm/memblock: properly handle overlaps and fix error path	2011-03-22 17:44:09 -07:00
memcontrol.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
memory-failure.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
memory.c	vm: fix mlock() on stack guard page	2011-04-12 14:15:51 -07:00
memory_hotplug.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
mempolicy.c	mempolicy: remove redundant check in __mpol_equal()	2011-03-22 17:44:04 -07:00
mempool.c	mm: remove broken 'kzalloc' mempool	2009-09-22 07:17:35 -07:00
migrate.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
mincore.c	thp: mincore transparent hugepage support	2011-01-13 17:32:44 -08:00
mlock.c	vm: fix mlock() on stack guard page	2011-04-12 14:15:51 -07:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	brk: fix min_brk lower bound computation for COMPAT_BRK	2011-01-13 17:32:48 -08:00
mmu_context.c	exit: fix oops in sync_mm_rss	2010-03-24 16:31:21 -07:00
mmu_notifier.c	thp: mmu_notifier_test_young	2011-01-13 17:32:46 -08:00
mmzone.c	mm: page allocator: adjust the per-cpu counter threshold when memory is low	2011-01-13 17:32:31 -08:00
mprotect.c	thp: mprotect: transparent huge page support	2011-01-13 17:32:44 -08:00
mremap.c	mm: avoid wrapping vm_pgoff in mremap()	2011-04-07 07:35:51 -07:00
msync.c	sanitize vfs_fsync calling conventions	2010-05-21 18:31:21 -04:00
nobootmem.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
nommu.c	NOMMU: implement access_remote_vm	2011-03-29 14:05:12 +01:00
oom_kill.c	lib, arch: add filter argument to show_mem and fix private implementations	2011-03-24 17:49:37 -07:00
page-writeback.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
page_alloc.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
page_cgroup.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
page_io.c	block: kill off REQ_UNPLUG	2011-03-10 08:52:27 +01:00
page_isolation.c	mm: page_isolation: codeclean fix comment and rm unneeded val init	2010-10-26 16:52:11 -07:00
pagewalk.c	pagewalk: only split huge pages when necessary	2011-03-22 17:44:04 -07:00
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c	mm: remove gfp mask from pcpu_get_vm_areas	2011-01-13 17:32:34 -08:00
percpu.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
pgtable-generic.c	mm/pgtable-generic.c: fix CONFIG_SWAP=n build	2011-01-26 10:49:58 +10:00
prio_tree.c	…
quicklist.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
readahead.c	read-ahead: use plugging	2011-03-10 08:52:26 +01:00
rmap.c	fs: move i_wb_list out from under inode_lock	2011-03-24 21:17:51 -04:00
shmem.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
slab.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
slob.c	mm: Remove support for kmem_cache_name()	2011-01-23 21:00:05 +02:00
slub.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
sparse-vmemmap.c	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
sparse.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
swap.c	mm: simplify code of swap.c	2011-03-22 17:44:09 -07:00
swap_state.c	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
swapfile.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
thrash.c	mm: pass mm to grab_swap_token	2009-06-23 12:50:05 -07:00
truncate.c	mm: deactivate invalidated pages	2011-03-22 17:44:03 -07:00
util.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
vmalloc.c	vmalloc: remove confusing comment on vwrite()	2011-03-22 17:44:09 -07:00
vmscan.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
vmstat.c	mm: add __GFP_OTHER_NODE flag	2011-03-22 17:44:05 -07:00