Linus Torvalds b4cbb197c7 vm: add vm_iomap_memory() helper function ... 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>		2013-04-16 16:45:45 -07:00
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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
Makefile	mm: introduce a common interface for balloon pages mobility	2012-12-11 17:22:26 -08:00
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	block: optionally snapshot page contents to provide stable pages during write	2013-02-21 17:22:20 -08:00
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.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
filemap_xip.c	mm: move all mmu notifier invocations to be done outside the PT lock	2012-10-09 16:22:58 +09:00
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	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
hugetlb.c	mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting	2013-03-22 16:41:20 -07:00
hugetlb_cgroup.c	mm/hugetlb: create hugetlb cgroup file in hugetlb_init	2012-12-18 15:02:15 -08:00
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
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: make madvise(MADV_WILLNEED) support swap file prefetch	2013-02-23 17:50:10 -08:00
memblock.c	x86, ACPI, mm: Revert movablemem_map support	2013-03-02 09:34:39 -08:00
memcontrol.c	memcg: initialize kmem-cache destroying work earlier	2013-03-08 15:05:34 -08:00
memory-failure.c	HWPOISON: change order of error_states[]'s elements	2013-02-23 17:50:22 -08:00
memory.c	vm: add vm_iomap_memory() helper function	2013-04-16 16:45:45 -07:00
memory_hotplug.c	mm/hotplug: only free wait_table if it's allocated by vmalloc	2013-03-22 16:41:20 -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: remove offlining arg to migrate_pages	2013-02-23 17:50:19 -08:00
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: prevent mmap_cache race in find_vma()	2013-04-04 11:46:28 -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: prevent mmap_cache race in find_vma()	2013-04-04 11:46:28 -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-writeback.c	2 writeback fixes	2013-02-28 13:21:44 -08:00
page_alloc.c	x86, ACPI, mm: Revert movablemem_map support	2013-03-02 09:34:39 -08:00
page_cgroup.c	memcontrol: use N_MEMORY instead N_HIGH_MEMORY	2012-12-12 17:38:32 -08:00
page_io.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
page_isolation.c	mm: fix zone_watermark_ok_safe() accounting of isolated pages	2013-01-04 16:11:46 -08:00
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	mm/rmap: rename anon_vma_unlock() => anon_vma_unlock_write()	2013-02-23 17:50:17 -08:00
shmem.c	fix nommu breakage in shmem.c	2013-03-01 23:50:45 -05:00
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
slab_common.c	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	The sweeping change is to make add_taint() explicitly indicate whether to disable	2013-02-25 15:41:43 -08:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	memory-failure: use num_poisoned_pages instead of mce_bad_pages	2013-02-23 17:50:15 -08:00
swap.c	swap: make each swap partition have one address_space	2013-02-23 17:50:17 -08:00
swap_state.c	swap: add per-partition lock for swapfile	2013-02-23 17:50:17 -08:00
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	mm: use NUMA_NO_NODE	2013-02-23 17:50:21 -08:00
vmscan.c	vmscan: change type of vm_total_pages to unsigned long	2013-02-23 17:50:22 -08:00
vmstat.c	mm: add & use zone_end_pfn() and zone_spans_pfn()	2013-02-23 17:50:20 -08:00