From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de,
dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com,
a.p.zijlstra@chello.nl, nikita@clusterfs.com,
trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com
Subject: [PATCH 09/15] mm: count reclaimable pages per BDI
Date: Thu, 10 May 2007 12:08:48 +0200 [thread overview]
Message-ID: <20070510101129.394378283@chello.nl> (raw)
In-Reply-To: <20070510100839.621199408@chello.nl>
[-- Attachment #1: bdi_stat_reclaimable.patch --]
[-- Type: text/plain, Size: 4681 bytes --]
Count per BDI reclaimable pages; nr_reclaimable = nr_dirty + nr_unstable.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
fs/buffer.c | 2 ++
fs/nfs/write.c | 7 +++++++
include/linux/backing-dev.h | 1 +
mm/page-writeback.c | 4 ++++
mm/truncate.c | 2 ++
5 files changed, 16 insertions(+)
Index: linux-2.6/fs/buffer.c
===================================================================
--- linux-2.6.orig/fs/buffer.c 2007-04-24 21:18:29.000000000 +0200
+++ linux-2.6/fs/buffer.c 2007-04-25 08:20:10.000000000 +0200
@@ -734,6 +734,8 @@ int __set_page_dirty_buffers(struct page
if (page->mapping) { /* Race with truncate? */
if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY);
+ __inc_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE);
}
radix_tree_tag_set(&mapping->page_tree,
Index: linux-2.6/mm/page-writeback.c
===================================================================
--- linux-2.6.orig/mm/page-writeback.c 2007-04-24 21:18:30.000000000 +0200
+++ linux-2.6/mm/page-writeback.c 2007-04-25 08:20:10.000000000 +0200
@@ -828,6 +828,8 @@ int __set_page_dirty_nobuffers(struct pa
BUG_ON(mapping2 != mapping);
if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY);
+ __inc_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE);
}
radix_tree_tag_set(&mapping->page_tree,
@@ -961,6 +963,8 @@ int clear_page_dirty_for_io(struct page
*/
if (TestClearPageDirty(page)) {
dec_zone_page_state(page, NR_FILE_DIRTY);
+ dec_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
return 1;
}
return 0;
Index: linux-2.6/mm/truncate.c
===================================================================
--- linux-2.6.orig/mm/truncate.c 2007-04-24 21:18:30.000000000 +0200
+++ linux-2.6/mm/truncate.c 2007-04-25 08:20:10.000000000 +0200
@@ -72,6 +72,8 @@ void cancel_dirty_page(struct page *page
struct address_space *mapping = page->mapping;
if (mapping && mapping_cap_account_dirty(mapping)) {
dec_zone_page_state(page, NR_FILE_DIRTY);
+ dec_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
if (account_size)
task_io_account_cancelled_write(account_size);
}
Index: linux-2.6/fs/nfs/write.c
===================================================================
--- linux-2.6.orig/fs/nfs/write.c 2007-04-25 08:17:04.000000000 +0200
+++ linux-2.6/fs/nfs/write.c 2007-04-25 08:20:29.000000000 +0200
@@ -454,6 +454,7 @@ nfs_mark_request_commit(struct nfs_page
set_bit(PG_NEED_COMMIT, &(req)->wb_flags);
spin_unlock(&nfsi->req_lock);
inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+ inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE);
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
}
@@ -552,6 +553,8 @@ static void nfs_cancel_commit_list(struc
while(!list_empty(head)) {
req = nfs_list_entry(head->next);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+ dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
nfs_list_remove_request(req);
clear_bit(PG_NEED_COMMIT, &(req)->wb_flags);
nfs_inode_remove_request(req);
@@ -1269,6 +1272,8 @@ nfs_commit_list(struct inode *inode, str
nfs_list_remove_request(req);
nfs_mark_request_commit(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+ dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
nfs_clear_page_writeback(req);
}
return -ENOMEM;
@@ -1294,6 +1299,8 @@ static void nfs_commit_done(struct rpc_t
nfs_list_remove_request(req);
clear_bit(PG_NEED_COMMIT, &(req)->wb_flags);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+ dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
dprintk("NFS: commit (%s/%Ld %d@%Ld)",
req->wb_context->dentry->d_inode->i_sb->s_id,
Index: linux-2.6/include/linux/backing-dev.h
===================================================================
--- linux-2.6.orig/include/linux/backing-dev.h 2007-04-25 08:20:03.000000000 +0200
+++ linux-2.6/include/linux/backing-dev.h 2007-04-25 08:20:10.000000000 +0200
@@ -27,6 +27,7 @@ enum bdi_state {
typedef int (congested_fn)(void *, int);
enum bdi_stat_item {
+ BDI_RECLAIMABLE,
NR_BDI_STAT_ITEMS
};
--
--
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next prev parent reply other threads:[~2007-05-10 10:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-10 10:08 [PATCH 00/15] per device dirty throttling -v6 Peter Zijlstra
2007-05-10 10:08 ` [PATCH 01/15] nfs: remove congestion_end() Peter Zijlstra
2007-05-10 10:08 ` [PATCH 02/15] lib: percpu_counter variable batch Peter Zijlstra
2007-05-10 10:08 ` [PATCH 03/15] lib: percpu_counter_mod64 Peter Zijlstra
2007-05-10 10:08 ` [PATCH 04/15] lib: percpu_counter_set Peter Zijlstra
2007-05-10 10:08 ` [PATCH 05/15] lib: percpu_count_sum_signed() Peter Zijlstra
2007-05-10 10:08 ` [PATCH 06/15] mm: bdi init hooks Peter Zijlstra
2007-05-10 10:08 ` [PATCH 07/15] mtd: give mtdconcat devices their own backing_dev_info Peter Zijlstra
2007-05-10 10:08 ` [PATCH 08/15] mm: scalable bdi statistics counters Peter Zijlstra
2007-05-10 10:08 ` Peter Zijlstra [this message]
2007-05-10 10:08 ` [PATCH 10/15] mm: count writeback pages per BDI Peter Zijlstra
2007-05-10 10:08 ` [PATCH 11/15] mm: expose BDI statistics in sysfs Peter Zijlstra
2007-05-10 10:08 ` [PATCH 12/15] mm: per device dirty threshold Peter Zijlstra
2007-05-10 10:08 ` [PATCH 13/15] debug: sysfs files for the current ratio/size/total Peter Zijlstra
2007-05-10 10:08 ` [PATCH 14/15] lib: abstract the floating proportion Peter Zijlstra
2007-05-10 10:08 ` [PATCH 15/15] mm: dirty balancing for tasks Peter Zijlstra
2007-05-15 4:48 ` [PATCH 00/15] per device dirty throttling -v6 Neil Brown
2007-05-15 7:44 ` Peter Zijlstra
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