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From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com,
	tomoki.sekiyama.qu@hitachi.com, a.p.zijlstra@chello.nl
Subject: [RFC][PATCH 4/6] mm: count unstable pages per BDI
Date: Mon, 19 Mar 2007 16:57:41 +0100	[thread overview]
Message-ID: <20070319164320.392874268@programming.kicks-ass.net> (raw)
In-Reply-To: <20070319155737.653325176@programming.kicks-ass.net>

[-- Attachment #1: bdi_stat_unstable.patch --]
[-- Type: text/plain, Size: 2019 bytes --]

Count per BDI unstable pages.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
 fs/nfs/write.c              |    4 ++++
 include/linux/backing-dev.h |    1 +
 2 files changed, 5 insertions(+)

Index: linux-2.6/fs/nfs/write.c
===================================================================
--- linux-2.6.orig/fs/nfs/write.c
+++ linux-2.6/fs/nfs/write.c
@@ -474,6 +474,7 @@ nfs_mark_request_commit(struct nfs_page 
 	nfsi->ncommit++;
 	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_UNSTABLE);
 	__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
 }
 #endif
@@ -545,6 +546,7 @@ 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_UNSTABLE);
 		nfs_list_remove_request(req);
 		nfs_inode_remove_request(req);
 		nfs_unlock_request(req);
@@ -1278,6 +1280,7 @@ 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_UNSTABLE);
 		nfs_clear_page_writeback(req);
 	}
 	return -ENOMEM;
@@ -1302,6 +1305,7 @@ static void nfs_commit_done(struct rpc_t
 		req = nfs_list_entry(data->pages.next);
 		nfs_list_remove_request(req);
 		dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+		dec_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_UNSTABLE);
 
 		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
+++ linux-2.6/include/linux/backing-dev.h
@@ -25,6 +25,7 @@ enum bdi_state {
 enum bdi_stat_item {
 	BDI_DIRTY,
 	BDI_WRITEBACK,
+	BDI_UNSTABLE,
 	NR_BDI_STAT_ITEMS
 };
 

--


  parent reply	other threads:[~2007-03-19 17:54 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-19 15:57 [RFC][PATCH 0/6] per device dirty throttling Peter Zijlstra
2007-03-19 15:57 ` [RFC][PATCH 1/6] mm: scalable bdi statistics counters Peter Zijlstra
2007-03-19 15:57 ` [RFC][PATCH 2/6] mm: count dirty pages per BDI Peter Zijlstra
2007-03-19 15:57 ` [RFC][PATCH 3/6] mm: count writeback " Peter Zijlstra
2007-03-19 15:57 ` Peter Zijlstra [this message]
2007-03-19 15:57 ` [RFC][PATCH 5/6] mm: per device dirty threshold Peter Zijlstra
2007-03-19 15:57 ` [RFC][PATCH 6/6] mm: expose BDI statistics in sysfs Peter Zijlstra
2007-03-19 18:29 ` [RFC][PATCH 0/6] per device dirty throttling Peter Zijlstra
2007-03-19 21:48 ` [RFC][PATCH 7/6] assorted fixes Peter Zijlstra
2007-03-20  7:47 ` [RFC][PATCH 0/6] per device dirty throttling David Chinner
2007-03-20  8:08   ` Peter Zijlstra
2007-03-20  9:38     ` David Chinner
2007-03-20  9:45       ` Peter Zijlstra
2007-03-20 15:38         ` Peter Zijlstra

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