linux/mm
Mel Gorman 5a178119b0 mm: add support for direct_IO to highmem pages
The patch "mm: add support for a filesystem to activate swap files and use
direct_IO for writing swap pages" added support for using direct_IO to
write swap pages but it is insufficient for highmem pages.

To support highmem pages, this patch kmaps() the page before calling the
direct_IO() handler.  As direct_IO deals with virtual addresses an
additional helper is necessary for get_kernel_pages() to lookup the struct
page for a kmap virtual address.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Eric Paris <eparis@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Neil Brown <neilb@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-31 18:42:47 -07:00
..
backing-dev.c mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads 2012-07-31 18:42:40 -07:00
bootmem.c bootmem: make ___alloc_bootmem_node_nopanic() really nopanic 2012-07-17 16:21:29 -07:00
bounce.c bounce: allow use of bounce pool via config option 2012-07-18 16:40:35 -04:00
cleancache.c
compaction.c mm: have order > 0 compaction start off where it left 2012-07-31 18:42:43 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c mm, fadvise: don't return -EINVAL when filesystem cannot implement fadvise() 2012-07-31 18:42:42 -07:00
failslab.c
filemap_xip.c
filemap.c
fremap.c
frontswap.c mm/frontswap: cleanup doc and comment error 2012-07-23 11:16:20 -04:00
highmem.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
huge_memory.c
hugetlb_cgroup.c hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate 2012-07-31 18:42:41 -07:00
hugetlb.c hugetlb/cgroup: assign the page hugetlb cgroup when we move the page to active list. 2012-07-31 18:42:41 -07:00
hwpoison-inject.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
init-mm.c
internal.h netvm: allow skb allocation to use PFMEMALLOC reserves 2012-07-31 18:42:46 -07:00
Kconfig mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c mm: Hold a file reference in madvise_remove 2012-07-06 10:34:38 -07:00
Makefile mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
memblock.c mm/memblock.c:memblock_double_array(): cosmetic cleanups 2012-07-31 18:42:41 -07:00
memcontrol.c mm, memcg: move all oom handling to memcontrol.c 2012-07-31 18:42:45 -07:00
memory_hotplug.c mm/hotplug: free zone->pageset when a zone becomes empty 2012-07-31 18:42:44 -07:00
memory-failure.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
memory.c mm/memory.c:print_vma_addr(): call up_read(&mm->mmap_sem) directly 2012-07-31 18:42:43 -07:00
mempolicy.c Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux 2012-07-30 11:32:24 -07:00
mempool.c
migrate.c hugetlb/cgroup: migrate hugetlb cgroup info from oldpage to new page during migration 2012-07-31 18:42:41 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c mm: account the total_vm in the vm_stat_account() 2012-07-31 18:42:39 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
mprotect.c
mremap.c mm: account the total_vm in the vm_stat_account() 2012-07-31 18:42:39 -07:00
msync.c
nobootmem.c memblock: free allocated memblock_reserved_regions later 2012-07-11 16:04:50 -07:00
nommu.c
oom_kill.c mm, memcg: move all oom handling to memcontrol.c 2012-07-31 18:42:45 -07:00
page_alloc.c mm: throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage 2012-07-31 18:42:46 -07:00
page_cgroup.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
page_io.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
page_isolation.c memory-hotplug: fix kswapd looping forever problem 2012-07-31 18:42:45 -07:00
page-writeback.c writeback: Fix some comment errors 2012-06-09 19:54:47 +08:00
pagewalk.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu-km.c
percpu-vm.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu.c
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c don't pass nameidata to ->create() 2012-07-14 16:34:47 +04:00
slab_common.c mm: Fix build warning in kmem_cache_create() 2012-07-30 13:15:40 +03:00
slab.c mm: micro-optimise slab to avoid a function call 2012-07-31 18:42:46 -07:00
slab.h mm, sl[aou]b: Use a common mutex definition 2012-07-09 12:13:41 +03:00
slob.c slob: Fix early boot kernel crash 2012-07-12 10:13:22 +03:00
slub.c mm: slub: optimise the SLUB fast path to avoid pfmemalloc checks 2012-07-31 18:42:45 -07:00
sparse-vmemmap.c
sparse.c mm: setup pageblock_order before it's used by sparsemem 2012-07-31 18:42:43 -07:00
swap_state.c mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages 2012-07-31 18:42:47 -07:00
swap.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
swapfile.c mm: swap: implement generic handler for swap_activate 2012-07-31 18:42:47 -07:00
truncate.c
util.c
vmalloc.c mm: make vb_alloc() more foolproof 2012-07-31 18:42:39 -07:00
vmscan.c mm: account for the number of times direct reclaimers get throttled 2012-07-31 18:42:46 -07:00
vmstat.c mm: account for the number of times direct reclaimers get throttled 2012-07-31 18:42:46 -07:00