Linus Torvalds c420060e7b vm: add vm_iomap_memory() helper function ... commit b4cbb197c7 upstream. Various drivers end up replicating the code to mmap() their memory buffers into user space, and our core memory remapping function may be very flexible but it is unnecessarily complicated for the common cases to use. Our internal VM uses pfn's ("page frame numbers") which simplifies things for the VM, and allows us to pass physical addresses around in a denser and more efficient format than passing a "phys_addr_t" around, and having to shift it up and down by the page size. But it just means that drivers end up doing that shifting instead at the interface level. It also means that drivers end up mucking around with internal VM things like the vma details (vm_pgoff, vm_start/end) way more than they really need to. So this just exports a function to map a certain physical memory range into user space (using a phys_addr_t based interface that is much more natural for a driver) and hides all the complexity from the driver. Some drivers will still end up tweaking the vm_page_prot details for things like prefetching or cacheability etc, but that's actually relevant to the driver, rather than caring about what the page offset of the mapping is into the particular IO memory region. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-04-25 21:19:56 -07:00
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backing-dev.c	backing-dev: fix wakeup timer races with bdi_unregister()	2012-02-01 16:52:49 +08:00
bootmem.c	mm: sparse: fix usemap allocation above node descriptor section	2012-10-02 10:30:36 -07:00
bounce.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
cleancache.c	mm: cleancache: Use __read_mostly as appropiate.	2012-01-23 16:08:09 -05:00
compaction.c	mm: compaction: fix echo 1 > compact_memory return error issue	2013-01-17 08:50:43 -08:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: dmapool: use provided gfp flags for all dma_alloc_coherent() calls	2012-12-17 10:37:44 -08:00
fadvise.c	mm/fadvise.c: drain all pagevecs if POSIX_FADV_DONTNEED fails to discard all pages	2013-02-28 06:59:01 -08:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap.c	radix-tree: use iterators in find_get_pages* functions	2012-03-28 17:14:37 -07:00
filemap_xip.c	mm/filemap_xip.c: fix race condition in xip_file_fault()	2012-02-03 16:16:41 -08:00
fremap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
highmem.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
huge_memory.c	thp, memcg: split hugepage for memcg oom on cow	2013-01-17 08:50:53 -08:00
hugetlb.c	hugetlbfs: add swap entry check in follow_hugetlb_page()	2013-04-25 21:19:54 -07:00
hwpoison-inject.c	HWPOISON: Clean up memory_failure() vs. __memory_failure()	2012-01-03 12:06:32 -08:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: thp: tail page refcounting fix	2011-11-02 16:06:57 -07:00
Kconfig	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -08:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: Disable early logging when kmemleak is off by default	2012-01-20 16:57:05 +00:00
ksm.c	ksm: cleanup: introduce find_mergeable_vma()	2012-03-21 17:54:59 -07:00
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: Hold a file reference in madvise_remove	2012-07-16 09:04:43 -07:00
Makefile	Cross Memory Attach	2011-10-31 17:30:44 -07:00
memblock.c	x86, mm: Trim memory in memblock to be page aligned	2012-10-31 10:02:56 -07:00
memcontrol.c	memcg: oom: fix totalpages calculation for memory.swappiness==0	2012-11-26 11:37:45 -08:00
memory-failure.c	mm: soft offline: split thp at the beginning of soft_offline_page()	2012-12-10 10:59:39 -08:00
memory.c	vm: add vm_iomap_memory() helper function	2013-04-25 21:19:56 -07:00
memory_hotplug.c	memory hotplug: fix section info double registration bug	2012-10-02 10:30:06 -07:00
mempolicy.c	tmpfs mempolicy: fix /proc/mounts corrupting memory	2013-01-11 09:06:49 -08:00
mempool.c	mempool: fix first round failure behavior	2012-01-10 16:30:45 -08:00
migrate.c	mm: fix NULL ptr dereference in move_pages	2012-04-25 21:26:34 -07:00
mincore.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	vm: avoid using find_vma_prev() unnecessarily	2012-03-06 18:23:36 -08:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmap.c	mm: prevent mmap_cache race in find_vma()	2013-04-12 09:38:47 -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	mmu_notifier_unregister NULL Pointer deref and multiple ->release() callouts	2013-02-28 06:59:00 -08:00
mmzone.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: collapse security_vm_enough_memory() variants into a single function	2012-02-14 10:45:39 +11:00
msync.c
nobootmem.c	memblock: free allocated memblock_reserved_regions later	2012-07-16 09:04:45 -07:00
nommu.c	mm: prevent mmap_cache race in find_vma()	2013-04-12 09:38:47 -07:00
oom_kill.c	signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig()	2012-03-23 16:58:41 -07:00
page-writeback.c	mm: fix calculation of dirtyable memory	2013-01-11 09:06:48 -08:00
page_alloc.c	mm: fix pageblock bitmap allocation	2013-02-28 06:58:58 -08:00
page_cgroup.c	page_cgroup: fix horrid swap accounting regression	2012-03-06 08:18:23 -08:00
page_io.c
page_isolation.c
pagewalk.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
percpu-km.c
percpu-vm.c	percpu: use bitmap_clear	2012-01-20 09:23:16 -08:00
percpu.c	kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP	2012-05-09 10:13:29 -07:00
pgtable-generic.c	thp: add HPAGE_PMD_* definitions for !CONFIG_TRANSPARENT_HUGEPAGE	2012-03-21 17:55:02 -07:00
prio_tree.c
process_vm_access.c	Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys	2013-03-14 11:29:51 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
rmap.c	mm: fix XFS oops due to dirty pages without buffers on s390	2012-10-31 10:02:56 -07:00
shmem.c	tmpfs: fix use-after-free of mempolicy object	2013-02-28 06:59:01 -08:00
slab.c	slab: fix the DEADLOCK issue on l3 alien lock	2012-10-13 05:38:37 +09:00
slob.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
slub.c	slub: fix a memory leak in get_partial_node()	2012-06-10 00:36:11 +09:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	mm/vmemmap: fix wrong use of virt_to_page	2012-12-10 10:59:39 -08:00
swap.c	mm: drain percpu lru add/rotate page-vectors on cpu hot-unplug	2012-03-21 17:54:58 -07:00
swap_state.c	mm: fix s390 BUG by __set_page_dirty_no_writeback on swap	2012-04-23 18:19:22 -07:00
swapfile.c	swap: fix shmem swapping when more than 8 areas	2012-06-22 11:36:55 -07:00
thrash.c	mm/thrash.c: quiet sparse noise	2011-10-31 17:30:50 -07:00
truncate.c	mm: fix invalidate_complete_page2() lock ordering	2012-10-13 05:38:51 +09:00
util.c	procfs: mark thread stack correctly in proc/<pid>/maps	2012-03-21 17:54:58 -07:00
vmalloc.c	mm: fix faulty initialization in vmalloc_init()	2012-06-10 00:36:06 +09:00
vmscan.c	mm: bugfix: set current->reclaim_state to NULL while returning from kswapd()	2012-11-26 11:37:19 -08:00
vmstat.c	mm: fix up the vmscan stat in vmstat	2012-04-25 21:26:33 -07:00