linux/mm
Mel Gorman f84f6e2b08 mm: vmscan: do not writeback filesystem pages in kswapd except in high priority
It is preferable that no dirty pages are dispatched for cleaning from the
page reclaim path.  At normal priorities, this patch prevents kswapd
writing pages.

However, page reclaim does have a requirement that pages be freed in a
particular zone.  If it is failing to make sufficient progress (reclaiming
< SWAP_CLUSTER_MAX at any priority priority), the priority is raised to
scan more pages.  A priority of DEF_PRIORITY - 3 is considered to be the
point where kswapd is getting into trouble reclaiming pages.  If this
priority is reached, kswapd will dispatch pages for writing.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Alex Elder <aelder@sgi.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-31 17:30:46 -07:00
..
Kconfig mm Kconfig typo: cleancacne -> cleancache 2011-06-10 14:47:52 +02:00
Kconfig.debug mm: debug-pagealloc: fix kconfig dependency warning 2011-03-22 17:44:02 -07:00
Makefile Cross Memory Attach 2011-10-31 17:30:44 -07:00
backing-dev.c mm: Add comment explaining task state setting in bdi_forker_thread() 2011-09-02 17:17:02 -06:00
bootmem.c crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn 2011-03-23 19:47:19 -07:00
bounce.c
cleancache.c mm: cleancache core ops functions and config 2011-05-26 10:01:36 -06:00
compaction.c mm: compaction: make isolate_lru_page() filter-aware 2011-10-31 17:30:44 -07:00
debug-pagealloc.c
dmapool.c devres: fix possible use after free 2011-07-25 20:57:14 -07:00
fadvise.c
failslab.c fault-injection: add ability to export fault_attr in arbitrary directory 2011-08-03 14:25:20 -10:00
filemap.c vfs: iov_iter: have iov_iter_advance decrement nr_segs appropriately 2011-10-28 13:55:08 +02:00
filemap_xip.c mm: Convert i_mmap_lock to a mutex 2011-05-25 08:39:18 -07:00
fremap.c mm: don't access vm_flags as 'int' 2011-05-26 09:20:31 -07:00
highmem.c mm: make HASHED_PAGE_VIRTUAL page_address' struct page argument const. 2011-08-17 13:00:20 -07:00
huge_memory.c mm/huge_memory.c: minor lock simplification in __khugepaged_exit 2011-07-25 20:57:09 -07:00
hugetlb.c mm: hugetlb: fix coding style issues 2011-07-25 20:57:09 -07:00
hwpoison-inject.c Fix common misspellings 2011-03-31 11:26:23 -03:00
init-mm.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
internal.h mm: nommu: sort mm->mmap list properly 2011-05-25 08:39:05 -07:00
kmemcheck.c
kmemleak-test.c
kmemleak.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
ksm.c oom: fix race while temporarily setting current's oom_score_adj 2011-10-31 17:30:45 -07:00
maccess.c maccess,probe_kernel: Make write/read src const void * 2011-05-25 19:56:23 -04:00
madvise.c fs: kill i_alloc_sem 2011-07-20 20:47:46 -04:00
memblock.c mm/memblock.c: avoid abuse of RED_INACTIVE 2011-07-25 20:57:09 -07:00
memcontrol.c mm: change isolate mode from #define to bitwise type 2011-10-31 17:30:44 -07:00
memory-failure.c HWPoison: add memory_failure_queue() 2011-08-03 11:15:58 -04:00
memory.c mm/futex: fix futex writes on archs with SW tracking of dirty & young 2011-07-25 20:57:11 -07:00
memory_hotplug.c mm: extend memory hotplug API to allow memory hotplug in virtual machines 2011-07-25 20:57:08 -07:00
mempolicy.c mm/mempolicy.c: make copy_from_user() provably correct 2011-09-14 18:09:36 -07:00
mempool.c
migrate.c mm: migration: clean up unmap_and_move() 2011-10-31 17:30:45 -07:00
mincore.c mm: clarify the radix_tree exceptional cases 2011-08-03 14:25:24 -10:00
mlock.c mm: don't access vm_flags as 'int' 2011-05-26 09:20:31 -07:00
mm_init.c
mmap.c mmap: fix and tidy up overcommit page arithmetic 2011-07-25 20:57:09 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c mm: Convert i_mmap_lock to a mutex 2011-05-25 08:39:18 -07:00
msync.c
nobootmem.c memblock/nobootmem: remove unneeded code from alloc_bootmem_node_high() 2011-05-25 08:39:31 -07:00
nommu.c mmap: fix and tidy up overcommit page arithmetic 2011-07-25 20:57:09 -07:00
oom_kill.c oom: fix race while temporarily setting current's oom_score_adj 2011-10-31 17:30:45 -07:00
page-writeback.c mm/page-writeback.c: document bdi_min_ratio 2011-10-31 17:30:45 -07:00
page_alloc.c mm: output a list of loaded modules when we hit bad_page() 2011-10-31 17:30:45 -07:00
page_cgroup.c mm: Convert vmalloc/memset to vzalloc 2011-09-15 13:56:56 +02:00
page_io.c
page_isolation.c
pagewalk.c pagewalk: fix code comment for THP 2011-07-25 20:57:09 -07:00
percpu-km.c
percpu-vm.c
percpu.c Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2011-05-24 11:53:42 -07:00
pgtable-generic.c
prio_tree.c sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
process_vm_access.c Cross Memory Attach 2011-10-31 17:30:44 -07:00
quicklist.c
readahead.c readahead: readahead page allocations are OK to fail 2011-05-25 08:39:25 -07:00
rmap.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback 2011-07-26 10:39:54 -07:00
shmem.c Merge branch 'next-evm' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/ima-2.6 into next 2011-08-09 10:31:03 +10:00
slab.c mm: restrict access to slab files under procfs and sysfs 2011-09-27 22:59:27 +03:00
slob.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
slub.c Merge branches 'slab/next' and 'slub/partial' into slab/for-linus 2011-10-26 18:09:12 +03:00
sparse-vmemmap.c
sparse.c mm: make some struct page's const 2011-07-25 20:57:07 -07:00
swap.c mm: batch activate_page() to reduce lock contention 2011-05-25 08:39:37 -07:00
swap_state.c
swapfile.c oom: fix race while temporarily setting current's oom_score_adj 2011-10-31 17:30:45 -07:00
thrash.c mm: swap-token: add a comment for priority aging 2011-07-25 20:57:08 -07:00
truncate.c mm: a few small updates for radix-swap 2011-08-03 14:25:24 -10:00
util.c mm: nommu: sort mm->mmap list properly 2011-05-25 08:39:05 -07:00
vmalloc.c mm: sync vmalloc address space page tables in alloc_vm_area() 2011-09-14 18:09:38 -07:00
vmscan.c mm: vmscan: do not writeback filesystem pages in kswapd except in high priority 2011-10-31 17:30:46 -07:00
vmstat.c mm: vmscan: do not writeback filesystem pages in direct reclaim 2011-10-31 17:30:46 -07:00