Hugh Dickins 2e441889c3 swapoff: scan ptes preemptibly ...

Provided that CONFIG_HIGHPTE is not set, unuse_pte_range can reduce latency
in swapoff by scanning the page table preemptibly: so long as unuse_pte is
careful to recheck that entry under pte lock.

(To tell the truth, this patch was not inspired by any cries for lower
latency here: rather, this restructuring permits a future memory controller
patch to allocate with GFP_KERNEL in unuse_pte, where before it could not.
But it would be wrong to tuck this change away inside a memcgroup patch.)

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Tested-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2008-02-05 09:44:15 -08:00

..

allocpercpu.c

Slab allocators: Replace explicit zeroing with __GFP_ZERO

2007-07-17 10:23:02 -07:00

backing-dev.c

mm/backing-dev.c: fix percpu_counter_destroy call bug in bdi_init

2007-12-05 09:21:18 -08:00

bootmem.c

[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols

2006-12-07 08:39:44 -08:00

bounce.c

block: Initial support for data-less (or empty) barrier support

2007-10-16 11:03:56 +02:00

fadvise.c

[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path

2006-12-08 08:28:43 -08:00

filemap_xip.c

Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user

2008-02-05 09:44:13 -08:00

filemap.c

fix writev regression: pan hanging unkillable and un-straceable

2008-02-03 07:55:39 +11:00

fremap.c

sys_remap_file_pages: fix ->vm_file accounting

2008-02-05 09:44:07 -08:00

highmem.c

Create the ZONE_MOVABLE zone

2007-07-17 10:22:59 -07:00

hugetlb.c

fix hugepages leak due to pagetable page sharing

2008-01-24 08:07:27 -08:00

internal.h

Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator

2007-10-16 09:43:01 -07:00

Kconfig

sh: Bump number of quicklists for SH-5.

2008-01-28 13:18:55 +09:00

madvise.c

speed up madvise_need_mmap_write() usage

2007-07-16 09:05:36 -07:00

Makefile

memory unplug: page isolation

2007-10-16 09:43:02 -07:00

memory_hotplug.c

Add IORESOUCE_BUSY flag for System RAM

2007-11-14 18:45:39 -08:00

memory.c

swapin needs gfp_mask for loop on tmpfs

2008-02-05 09:44:14 -08:00

mempolicy.c

Migration: find correct vma in new_vma_page()

2007-11-14 18:45:38 -08:00

mempool.c

spelling fixes: mm/

2007-10-20 01:27:18 +02:00

migrate.c

Typo fixes retrun -> return

2007-10-20 02:13:26 +02:00

mincore.c

[PATCH] mincore: vma crossing fix

2007-02-15 09:57:03 -08:00

mlock.c

do not limit locked memory when RLIMIT_MEMLOCK is RLIM_INFINITY

2007-07-16 09:05:37 -07:00

mmap.c

vm audit: add VM_DONTEXPAND to mmap for drivers that need it

2008-02-04 07:55:38 -08:00

mmzone.c

[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols

2006-12-07 08:39:44 -08:00

mprotect.c

fix mprotect vma_wants_writenotify prot

2007-10-23 08:32:06 -07:00

mremap.c

sparse pointer use of zero as null

2007-10-18 14:37:31 -07:00

msync.c

Detach sched.h from mm.h

2007-05-21 09:18:19 -07:00

nommu.c

vmalloc: add const to void* parameters

2008-02-05 09:44:14 -08:00

oom_kill.c

sched: sched_rt_entity

2008-01-25 21:08:27 +01:00

page_alloc.c

mm: fix section mismatch warning in page_alloc.c

2008-01-17 15:38:58 -08:00

page_io.c

Drop 'size' argument from bio_endio and bi_end_io

2007-10-10 09:25:57 +02:00

page_isolation.c

memory hotremove: unset migrate type "ISOLATE" after removal

2007-11-14 18:45:38 -08:00

page-writeback.c

Revert "writeback: introduce writeback_control.more_io to indicate more io"

2008-01-14 21:21:29 -08:00

pdflush.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

prio_tree.c

spelling fixes: mm/

2007-10-20 01:27:18 +02:00

quicklist.c

quicklists: Only consider memory that can be used with GFP_KERNEL

2008-01-14 08:52:22 -08:00

readahead.c

mm: bdi init hooks

2007-10-17 08:42:45 -07:00

rmap.c

[S390] Optimize storage key handling for anonymous pages

2007-11-20 11:13:46 +01:00

shmem_acl.c

[PATCH] Fix typos in mm/shmem_acl.c

2006-10-11 11:14:23 -07:00

shmem.c

shmem_file_write is redundant

2008-02-05 09:44:15 -08:00

slab.c

cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()

2008-01-25 21:08:02 +01:00

slob.c

Avoid double memclear() in SLOB/SLUB

2007-12-09 10:17:52 -08:00

slub.c

SLUB: Do not upset lockdep

2008-02-04 10:56:02 -08:00

sparse-vmemmap.c

memory hotplug fix: fix section mismatch in vmammap_allock_block()

2007-11-29 09:24:54 -08:00

sparse.c

is_vmalloc_addr(): Check if an address is within the vmalloc boundaries

2008-02-05 09:44:14 -08:00

swap_state.c

swapin needs gfp_mask for loop on tmpfs

2008-02-05 09:44:14 -08:00

swap.c

spelling fixes: mm/

2007-10-20 01:27:18 +02:00

swapfile.c

swapoff: scan ptes preemptibly

2008-02-05 09:44:15 -08:00

thrash.c

Bug in mm/thrash.c function grab_swap_token()

2007-05-11 08:29:32 -07:00

tiny-shmem.c

r/o bind mounts: filesystem helpers for custom 'struct file's

2007-10-17 08:43:04 -07:00

truncate.c

Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user

2008-02-05 09:44:13 -08:00

util.c

fix mm/util.c:krealloc()

2007-11-14 18:45:41 -08:00

vmalloc.c

vmalloc: clean up page array indexing

2008-02-05 09:44:14 -08:00

vmscan.c

spelling fixes: mm/

2007-10-20 01:27:18 +02:00

vmstat.c

vmstat: fix section mismatch warning

2007-11-14 18:45:42 -08:00