Wu Fengguang 4cbec4c8b9 writeback: remove the internal 5% low bound on dirty_ratio ... The dirty_ratio was silently limited in global_dirty_limits() to >= 5%. This is not a user expected behavior. And it's inconsistent with calc_period_shift(), which uses the plain vm_dirty_ratio value. Let's remove the internal bound. At the same time, fix balance_dirty_pages() to work with the dirty_thresh=0 case. This allows applications to proceed when dirty+writeback pages are all cleaned. And ">" fits with the name "exceeded" better than ">=" does. Neil thinks it is an aesthetic improvement as well as a functional one :) Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Jan Kara <jack@suse.cz> Proposed-by: Con Kolivas <kernel@kolivas.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Neil Brown <neilb@suse.de> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michael Rubin <mrubin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-10-26 16:52:08 -07:00
..
backing-dev.c	writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant congestion is not being encountered in the current zone	2010-10-26 16:52:07 -07:00
bootmem.c	x86, memblock: Replace e820_/_early string with memblock_	2010-08-27 11:13:47 -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: handle active and inactive fairly in too_many_isolated	2010-09-09 18:57:24 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap.c	gcc-4.6: mm: fix unused but set warnings	2010-08-09 20:44:58 -07:00
filemap_xip.c
fremap.c	Avoid pgoff overflow in remap_file_pages	2010-09-25 09:34:58 -07:00
highmem.c
hugetlb.c	Encode huge page size for VM_FAULT_HWPOISON errors	2010-10-08 09:32:46 +02:00
hwpoison-inject.c	HWPOISON, hugetlb: support hwpoison injection for hugepage	2010-08-11 09:23:11 +02:00
init-mm.c	mm: provide init_mm mm_context initializer	2010-08-09 20:44:54 -07:00
internal.h
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2010-10-22 17:31:36 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: Fix typo in the comment	2010-08-08 21:57:23 +01:00
ksm.c	ksm: fix bad user data when swapping	2010-10-04 11:09:53 -07:00
maccess.c
madvise.c
Makefile	percpu: use percpu allocator on UP too	2010-10-02 10:26:05 +03:00
memblock.c	memblock: Annotate memblock functions with __init_memblock	2010-10-11 16:00:52 -07:00
memcontrol.c	memcg: fix thresholds with use_hierarchy == 1	2010-10-07 13:31:21 -07:00
memory-failure.c	mm: compaction: fix COMPACTPAGEFAILED counting	2010-10-26 16:52:06 -07:00
memory.c	Merge branch 'hwpoison-hugepages' into hwpoison	2010-10-22 17:40:48 +02:00
memory_hotplug.c	memory hotplug: unify is_removable and offline detection code	2010-10-26 16:52:06 -07:00
mempolicy.c	mm/mempolicy.c: check return code of check_range	2010-10-26 16:52:06 -07:00
mempool.c
migrate.c	mm: compaction: fix COMPACTPAGEFAILED counting	2010-10-26 16:52:06 -07:00
mincore.c
mlock.c	mm: Move vma_stack_continue into mm.h	2010-09-09 09:05:06 -07:00
mm_init.c
mmap.c	mmap: call unlink_anon_vmas() in __split_vma() in case of error	2010-09-22 17:22:40 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c	mm: page allocator: calculate a better estimate of NR_FREE_PAGES when memory is low and kswapd is awake	2010-09-09 18:57:25 -07:00
mprotect.c
mremap.c
msync.c
nommu.c	mm: make the vma list be doubly linked	2010-08-21 08:49:21 -07:00
oom_kill.c	oom: kill all threads sharing oom killed task's mm	2010-10-26 16:52:05 -07:00
page-writeback.c	writeback: remove the internal 5% low bound on dirty_ratio	2010-10-26 16:52:08 -07:00
page_alloc.c	writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant congestion is not being encountered in the current zone	2010-10-26 16:52:07 -07:00
page_cgroup.c
page_io.c
page_isolation.c
pagewalk.c
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c
percpu.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-10-24 13:41:39 -07:00
prio_tree.c
quicklist.c
readahead.c
rmap.c	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2010-10-26 10:13:10 -07:00
shmem.c	shmem: put_super must percpu_counter_destroy	2010-08-17 18:33:11 -07:00
slab.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2010-08-22 10:08:52 -07:00
slob.c	slob: fix gfp flags for order-0 page allocations	2010-10-02 10:24:28 +03:00
slub.c	SLUB: Fix memory hotplug with !NUMA	2010-10-06 21:16:42 +03:00
sparse-vmemmap.c	x86: Use memblock to replace early_res	2010-08-27 11:12:29 -07:00
sparse.c
swap.c
swap_state.c
swapfile.c	Merge branch 'v2.6.36-rc8' into for-2.6.37/barrier	2010-10-19 09:13:04 +02:00
thrash.c
truncate.c	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
util.c	export __get_user_pages_fast() function	2010-10-24 10:51:24 +02:00
vmalloc.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2010-10-22 17:31:36 -07:00
vmscan.c	writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant congestion is not being encountered in the current zone	2010-10-26 16:52:07 -07:00
vmstat.c	writeback: report dirty thresholds in /proc/vmstat	2010-10-26 16:52:06 -07:00