Tejun Heo f0054bb1e1 writeback: move backing_dev_info->wb_lock and ->worklist into bdi_writeback ... Currently, a bdi (backing_dev_info) embeds single wb (bdi_writeback) and the role of the separation is unclear. For cgroup support for writeback IOs, a bdi will be updated to host multiple wb's where each wb serves writeback IOs of a different cgroup on the bdi. To achieve that, a wb should carry all states necessary for servicing writeback IOs for a cgroup independently. This patch moves bdi->wb_lock and ->worklist into wb. * The lock protects bdi->worklist and bdi->wb.dwork scheduling. While moving, rename it to wb->work_lock as wb->wb_lock is confusing. Also, move wb->dwork downwards so that it's colocated with the new ->work_lock and ->work_list fields. * bdi_writeback_workfn() -> wb_workfn() bdi_wakeup_thread_delayed(bdi) -> wb_wakeup_delayed(wb) bdi_wakeup_thread(bdi) -> wb_wakeup(wb) bdi_queue_work(bdi, ...) -> wb_queue_work(wb, ...) __bdi_start_writeback(bdi, ...) -> __wb_start_writeback(wb, ...) get_next_work_item(bdi) -> get_next_work_item(wb) * bdi_wb_shutdown() is renamed to wb_shutdown() and now takes @wb. The function contained parts which belong to the containing bdi rather than the wb itself - testing cap_writeback_dirty and bdi_remove_from_list() invocation. Those are moved to bdi_unregister(). * bdi_wb_{init|exit}() are renamed to wb_{init|exit}(). Initializations of the moved bdi->wb_lock and ->work_list are relocated from bdi_init() to wb_init(). * As there's still only one bdi_writeback per backing_dev_info, all uses of bdi->state are mechanically replaced with bdi->wb.state introducing no behavior changes. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>		2015-06-02 08:33:34 -06:00
..
kasan	mm/mempool.c: kasan: poison mempool elements	2015-04-15 16:35:20 -07:00
backing-dev.c	writeback: move backing_dev_info->wb_lock and ->worklist into bdi_writeback	2015-06-02 08:33:34 -06:00
balloon_compaction.c	mm/balloon_compaction: fix deflation when compaction is disabled	2014-10-29 16:33:15 -07:00
bootmem.c	mem-hotplug: reset node managed pages when hot-adding a new pgdat	2014-11-13 16:17:06 -08:00
cleancache.c	cleancache: remove limit on the number of cleancache enabled filesystems	2015-04-14 16:49:03 -07:00
cma.c	mm: cma: add trace events for CMA allocations and freeings	2015-04-15 16:35:19 -07:00
cma.h	mm: cma: allocation trigger	2015-04-14 16:49:00 -07:00
cma_debug.c	mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()	2015-04-15 16:35:20 -07:00
compaction.c	mm/compaction.c: fix "suitable_migration_target() unused" warning	2015-04-15 16:35:20 -07:00
debug-pagealloc.c	mm/debug-pagealloc: make debug-pagealloc boottime configurable	2014-12-13 12:42:48 -08:00
debug.c	mm: account pmd page tables to the process	2015-02-11 17:06:04 -08:00
dmapool.c	mm/dmapool.c: fixed a brace coding style issue	2014-10-09 22:26:00 -04:00
early_ioremap.c	mm: create generic early_ioremap() support	2014-04-07 16:36:15 -07:00
fadvise.c	vfs: remove get_xip_mem	2015-02-16 17:56:03 -08:00
failslab.c
filemap.c	memcg: add per cgroup dirty page accounting	2015-06-02 08:33:33 -06:00
frontswap.c	mm/frontswap.c: fix the condition in BUG_ON	2014-12-10 17:41:08 -08:00
gup.c	mm: use READ_ONCE() for non-scalar types	2015-04-15 16:35:18 -07:00
highmem.c	mm/highmem: make kmap cache coloring aware	2014-08-06 18:01:22 -07:00
huge_memory.c	thp: cleanup khugepaged startup	2015-04-15 16:35:19 -07:00
hugetlb.c	mm: hugetlb: cleanup using paeg_huge_active()	2015-04-15 16:35:19 -07:00
hugetlb_cgroup.c	mm: page_counter: pull "-1" handling out of page_counter_memparse()	2015-02-11 17:06:02 -08:00
hwpoison-inject.c	mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove_recursive	2014-08-06 18:01:19 -07:00
init-mm.c
internal.h	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
interval_tree.c	mm: replace vma->sharead.linear with vma->shared	2015-02-10 14:30:31 -08:00
Kconfig	mm: cma: debugfs interface	2015-04-14 16:49:00 -07:00
Kconfig.debug	mm/debug_pagealloc: remove obsolete Kconfig options	2015-01-08 15:10:52 -08:00
kmemcheck.c	mm/slab_common: move kmem_cache definition to internal header	2014-10-09 22:25:50 -04:00
kmemleak-test.c	mm/kmemleak-test.c: use pr_fmt for logging	2014-06-06 16:08:18 -07:00
kmemleak.c	kmemleak: disable kasan instrumentation for kmemleak	2015-02-13 21:21:41 -08:00
ksm.c	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
list_lru.c	memcg: reparent list_lrus and free kmemcg_id on css offline	2015-02-12 18:54:10 -08:00
maccess.c
madvise.c	vfs: remove get_xip_mem	2015-02-16 17:56:03 -08:00
Makefile	mm: move memtest under mm	2015-04-14 16:49:06 -07:00
memblock.c	mm/memblock.c: add debug output for memblock_add()	2015-04-15 16:35:19 -07:00
memcontrol.c	memcg: implement mem_cgroup_css_from_page()	2015-06-02 08:33:34 -06:00
memory-failure.c	mm: hugetlb: introduce page_huge_active	2015-04-15 16:35:19 -07:00
memory.c	mm: new pfn_mkwrite same as page_mkwrite for VM_PFNMAP	2015-04-15 16:35:20 -07:00
memory_hotplug.c	mm: hugetlb: cleanup using paeg_huge_active()	2015-04-15 16:35:19 -07:00
mempolicy.c	mm, thp: really limit transparent hugepage allocation to local node	2015-04-14 16:49:03 -07:00
mempool.c	mm/mempool.c: kasan: poison mempool elements	2015-04-15 16:35:20 -07:00
memtest.c	memtest: use phys_addr_t for physical addresses	2015-04-14 16:49:06 -07:00
migrate.c	mm/migrate: check-before-clear PageSwapCache	2015-04-15 16:35:17 -07:00
mincore.c	mincore: apply page table walker on do_mincore()	2015-02-11 17:06:06 -08:00
mlock.c	mm: move mm_populate()-related code to mm/gup.c	2015-04-14 16:49:00 -07:00
mm_init.c	mm/mm_init.c: mark mminit_loglevel __meminitdata	2015-02-12 18:54:11 -08:00
mmap.c	mm/mmap.c: use while instead of if+goto	2015-04-15 16:35:19 -07:00
mmu_context.c	sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm	2014-02-21 08:50:17 +01:00
mmu_notifier.c	mmu_notifier: add the callback for mmu_notifier_invalidate_range()	2014-11-13 13:46:09 +11:00
mmzone.c	mm: microoptimize zonelist operations	2015-02-11 17:06:02 -08:00
mprotect.c	mm: numa: preserve PTE write permissions across a NUMA hinting fault	2015-03-25 16:20:31 -07:00
mremap.c	mm/mremap.c: clean up goto just return ERR_PTR	2015-04-15 16:35:18 -07:00
msync.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
nobootmem.c	mem-hotplug: reset node managed pages when hot-adding a new pgdat	2014-11-13 16:17:06 -08:00
nommu.c	nommu: use __vfs_read()	2015-04-11 22:27:56 -04:00
oom_kill.c	mm/oom_kill.c: fix typo in comment	2015-04-15 16:35:16 -07:00
page-writeback.c	writeback: s/bdi/wb/ in mm/page-writeback.c	2015-06-02 08:33:34 -06:00
page_alloc.c	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
page_counter.c	mm: page_counter: pull "-1" handling out of page_counter_memparse()	2015-02-11 17:06:02 -08:00
page_ext.c	mm/page_owner: keep track of page owners	2014-12-13 12:42:48 -08:00
page_io.c	suspend: simplify block I/O handling	2015-05-19 09:19:59 -06:00
page_isolation.c	mm/page_alloc.c: call kernel_map_pages in unset_migrateype_isolate	2015-03-25 16:20:30 -07:00
page_owner.c	mm/page_owner.c: remove unnecessary stack_trace field	2015-02-11 17:06:07 -08:00
pagewalk.c	mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers	2015-03-25 16:20:30 -07:00
percpu-km.c	percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated	2014-09-02 14:46:05 -04:00
percpu-vm.c	percpu: move region iterations out of pcpu_[de]populate_chunk()	2014-09-02 14:46:02 -04:00
percpu.c	percpu: Fix trivial typos in comments	2015-03-24 13:41:54 -04:00
pgtable-generic.c	mm: convert p[te|md]_mknonnuma and remaining page table manipulations	2015-02-12 18:54:08 -08:00
process_vm_access.c	process_vm_access: switch to {compat_,}import_iovec()	2015-04-11 22:27:12 -04:00
quicklist.c
readahead.c	fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info	2015-01-20 14:03:04 -07:00
rmap.c	memcg: add per cgroup dirty page accounting	2015-06-02 08:33:33 -06:00
shmem.c	VFS: assorted weird filesystems: d_inode() annotations	2015-04-15 15:06:58 -04:00
slab.c	mm: remove GFP_THISNODE	2015-04-14 16:49:03 -07:00
slab.h	slub: make dead caches discard free slabs immediately	2015-02-12 18:54:10 -08:00
slab_common.c	mm: slub: add kernel address sanitizer support for slub allocator	2015-02-13 21:21:41 -08:00
slob.c	slob: make slob_alloc_node() static and remove EXPORT_SYMBOL()	2015-04-14 16:48:59 -07:00
slub.c	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
sparse-vmemmap.c	mm/sparse: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
sparse.c	mm: use macros from compiler.h instead of __attribute__((...))	2014-04-07 16:35:54 -07:00
swap.c	mm: don't call __page_cache_release for hugetlb	2015-04-15 16:35:19 -07:00
swap_cgroup.c	mm: page_cgroup: rename file to mm/swap_cgroup.c	2014-12-10 17:41:09 -08:00
swap_state.c	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
swapfile.c	mm: remove rest of ACCESS_ONCE() usages	2015-04-15 16:35:18 -07:00
truncate.c	memcg: add per cgroup dirty page accounting	2015-06-02 08:33:33 -06:00
util.c	mm: uninline and cleanup page-mapping related helpers	2015-04-15 16:35:19 -07:00
vmacache.c	mm,vmacache: count number of system-wide flushes	2014-12-13 12:42:48 -08:00
vmalloc.c	mm/vmalloc: get rid of dirty bitmap inside vmap_block structure	2015-04-15 16:35:18 -07:00
vmpressure.c	mm/vmpressure.c: fix race in vmpressure_work_fn()	2014-12-02 17:32:07 -08:00
vmscan.c	memcg: add per cgroup dirty page accounting	2015-06-02 08:33:33 -06:00
vmstat.c	vmstat: Reduce time interval to stat update on idle cpu	2015-02-11 17:06:07 -08:00
workingset.c	list_lru: add helpers to isolate items	2015-02-12 18:54:10 -08:00
zbud.c	mm/zpool: add name argument to create zpool	2015-02-12 18:54:12 -08:00
zpool.c	mm/zpool: add name argument to create zpool	2015-02-12 18:54:12 -08:00
zsmalloc.c	zsmalloc: remove extra cond_resched() in __zs_compact	2015-04-15 16:35:22 -07:00
zswap.c	mm/zpool: add name argument to create zpool	2015-02-12 18:54:12 -08:00