From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Andrea Righi <arighi@develer.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: linux-mm <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 08/27] nfs: dirty livelock prevention is now done in VFS
Date: Thu, 03 Mar 2011 14:45:13 +0800 [thread overview]
Message-ID: <20110303074949.665428259@intel.com> (raw)
In-Reply-To: 20110303064505.718671603@intel.com
[-- Attachment #1: nfs-revert-livelock-72cb77f4a5ac.patch --]
[-- Type: text/plain, Size: 2757 bytes --]
This reverts commit 72cb77f4a5 ("NFS: Throttle page dirtying while we're
flushing to disk"). The two problems it tries to address
- sync live lock
- out of order writes
are now all addressed in the VFS
- PAGECACHE_TAG_TOWRITE prevents sync live lock
- IO-less balance_dirty_pages() avoids concurrent writes
CC: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
fs/nfs/file.c | 9 ---------
fs/nfs/write.c | 11 -----------
include/linux/nfs_fs.h | 1 -
3 files changed, 21 deletions(-)
--- linux-next.orig/fs/nfs/file.c 2011-02-21 14:21:13.000000000 +0800
+++ linux-next/fs/nfs/file.c 2011-02-21 14:28:57.000000000 +0800
@@ -392,15 +392,6 @@ static int nfs_write_begin(struct file *
IOMODE_RW);
start:
- /*
- * Prevent starvation issues if someone is doing a consistency
- * sync-to-disk
- */
- ret = wait_on_bit(&NFS_I(mapping->host)->flags, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (ret)
- return ret;
-
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
return -ENOMEM;
--- linux-next.orig/fs/nfs/write.c 2011-02-21 14:24:57.000000000 +0800
+++ linux-next/fs/nfs/write.c 2011-02-21 14:28:57.000000000 +0800
@@ -337,26 +337,15 @@ static int nfs_writepages_callback(struc
int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
struct inode *inode = mapping->host;
- unsigned long *bitlock = &NFS_I(inode)->flags;
struct nfs_pageio_descriptor pgio;
int err;
- /* Stop dirtying of new pages while we sync */
- err = wait_on_bit_lock(bitlock, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (err)
- goto out_err;
-
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
nfs_pageio_init_write(&pgio, inode, wb_priority(wbc));
err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
nfs_pageio_complete(&pgio);
- clear_bit_unlock(NFS_INO_FLUSHING, bitlock);
- smp_mb__after_clear_bit();
- wake_up_bit(bitlock, NFS_INO_FLUSHING);
-
if (err < 0)
goto out_err;
err = pgio.pg_error;
--- linux-next.orig/include/linux/nfs_fs.h 2011-02-21 14:24:59.000000000 +0800
+++ linux-next/include/linux/nfs_fs.h 2011-02-21 14:29:00.000000000 +0800
@@ -215,7 +215,6 @@ struct nfs_inode {
#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */
#define NFS_INO_STALE (1) /* possible stale inode */
#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */
-#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Andrea Righi <arighi@develer.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: linux-mm <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 08/27] nfs: dirty livelock prevention is now done in VFS
Date: Thu, 03 Mar 2011 14:45:13 +0800 [thread overview]
Message-ID: <20110303074949.665428259@intel.com> (raw)
In-Reply-To: 20110303064505.718671603@intel.com
[-- Attachment #1: nfs-revert-livelock-72cb77f4a5ac.patch --]
[-- Type: text/plain, Size: 3060 bytes --]
This reverts commit 72cb77f4a5 ("NFS: Throttle page dirtying while we're
flushing to disk"). The two problems it tries to address
- sync live lock
- out of order writes
are now all addressed in the VFS
- PAGECACHE_TAG_TOWRITE prevents sync live lock
- IO-less balance_dirty_pages() avoids concurrent writes
CC: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
fs/nfs/file.c | 9 ---------
fs/nfs/write.c | 11 -----------
include/linux/nfs_fs.h | 1 -
3 files changed, 21 deletions(-)
--- linux-next.orig/fs/nfs/file.c 2011-02-21 14:21:13.000000000 +0800
+++ linux-next/fs/nfs/file.c 2011-02-21 14:28:57.000000000 +0800
@@ -392,15 +392,6 @@ static int nfs_write_begin(struct file *
IOMODE_RW);
start:
- /*
- * Prevent starvation issues if someone is doing a consistency
- * sync-to-disk
- */
- ret = wait_on_bit(&NFS_I(mapping->host)->flags, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (ret)
- return ret;
-
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
return -ENOMEM;
--- linux-next.orig/fs/nfs/write.c 2011-02-21 14:24:57.000000000 +0800
+++ linux-next/fs/nfs/write.c 2011-02-21 14:28:57.000000000 +0800
@@ -337,26 +337,15 @@ static int nfs_writepages_callback(struc
int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
struct inode *inode = mapping->host;
- unsigned long *bitlock = &NFS_I(inode)->flags;
struct nfs_pageio_descriptor pgio;
int err;
- /* Stop dirtying of new pages while we sync */
- err = wait_on_bit_lock(bitlock, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (err)
- goto out_err;
-
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
nfs_pageio_init_write(&pgio, inode, wb_priority(wbc));
err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
nfs_pageio_complete(&pgio);
- clear_bit_unlock(NFS_INO_FLUSHING, bitlock);
- smp_mb__after_clear_bit();
- wake_up_bit(bitlock, NFS_INO_FLUSHING);
-
if (err < 0)
goto out_err;
err = pgio.pg_error;
--- linux-next.orig/include/linux/nfs_fs.h 2011-02-21 14:24:59.000000000 +0800
+++ linux-next/include/linux/nfs_fs.h 2011-02-21 14:29:00.000000000 +0800
@@ -215,7 +215,6 @@ struct nfs_inode {
#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */
#define NFS_INO_STALE (1) /* possible stale inode */
#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */
-#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
Wu Fengguang <fengguang.wu@intel.com>,
Christoph Hellwig <hch@lst.de>,
Dave Chinner <david@fromorbit.com>, Theodore Ts'o <tytso@mit.edu>,
Chris Mason <chris.mason@oracle.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mel Gorman <mel@csn.ul.ie>, Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Greg Thelen <gthelen@google.com>,
Minchan Kim <minchan.kim@gmail.com>,
Vivek Goyal <vgoyal@redhat.com>,
Andrea Righi <arighi@develer.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
linux-mm <linux-mm@kvack.org>,
linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 08/27] nfs: dirty livelock prevention is now done in VFS
Date: Thu, 03 Mar 2011 14:45:13 +0800 [thread overview]
Message-ID: <20110303074949.665428259@intel.com> (raw)
In-Reply-To: 20110303064505.718671603@intel.com
[-- Attachment #1: nfs-revert-livelock-72cb77f4a5ac.patch --]
[-- Type: text/plain, Size: 3060 bytes --]
This reverts commit 72cb77f4a5 ("NFS: Throttle page dirtying while we're
flushing to disk"). The two problems it tries to address
- sync live lock
- out of order writes
are now all addressed in the VFS
- PAGECACHE_TAG_TOWRITE prevents sync live lock
- IO-less balance_dirty_pages() avoids concurrent writes
CC: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
fs/nfs/file.c | 9 ---------
fs/nfs/write.c | 11 -----------
include/linux/nfs_fs.h | 1 -
3 files changed, 21 deletions(-)
--- linux-next.orig/fs/nfs/file.c 2011-02-21 14:21:13.000000000 +0800
+++ linux-next/fs/nfs/file.c 2011-02-21 14:28:57.000000000 +0800
@@ -392,15 +392,6 @@ static int nfs_write_begin(struct file *
IOMODE_RW);
start:
- /*
- * Prevent starvation issues if someone is doing a consistency
- * sync-to-disk
- */
- ret = wait_on_bit(&NFS_I(mapping->host)->flags, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (ret)
- return ret;
-
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
return -ENOMEM;
--- linux-next.orig/fs/nfs/write.c 2011-02-21 14:24:57.000000000 +0800
+++ linux-next/fs/nfs/write.c 2011-02-21 14:28:57.000000000 +0800
@@ -337,26 +337,15 @@ static int nfs_writepages_callback(struc
int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
struct inode *inode = mapping->host;
- unsigned long *bitlock = &NFS_I(inode)->flags;
struct nfs_pageio_descriptor pgio;
int err;
- /* Stop dirtying of new pages while we sync */
- err = wait_on_bit_lock(bitlock, NFS_INO_FLUSHING,
- nfs_wait_bit_killable, TASK_KILLABLE);
- if (err)
- goto out_err;
-
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
nfs_pageio_init_write(&pgio, inode, wb_priority(wbc));
err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
nfs_pageio_complete(&pgio);
- clear_bit_unlock(NFS_INO_FLUSHING, bitlock);
- smp_mb__after_clear_bit();
- wake_up_bit(bitlock, NFS_INO_FLUSHING);
-
if (err < 0)
goto out_err;
err = pgio.pg_error;
--- linux-next.orig/include/linux/nfs_fs.h 2011-02-21 14:24:59.000000000 +0800
+++ linux-next/include/linux/nfs_fs.h 2011-02-21 14:29:00.000000000 +0800
@@ -215,7 +215,6 @@ struct nfs_inode {
#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */
#define NFS_INO_STALE (1) /* possible stale inode */
#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */
-#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
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next prev parent reply other threads:[~2011-03-03 8:21 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-03 6:45 [PATCH 00/27] IO-less dirty throttling v6 Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 01/27] writeback: add bdi_dirty_limit() kernel-doc Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 02/27] writeback: avoid duplicate balance_dirty_pages_ratelimited() calls Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 03/27] writeback: skip balance_dirty_pages() for in-memory fs Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 04/27] writeback: reduce per-bdi dirty threshold ramp up time Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 05/27] btrfs: avoid duplicate balance_dirty_pages_ratelimited() calls Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 06/27] btrfs: lower the dirty balance poll interval Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-04 6:22 ` Dave Chinner
2011-03-04 6:22 ` Dave Chinner
2011-03-04 7:57 ` Wu Fengguang
2011-03-04 7:57 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 07/27] btrfs: wait on too many nr_async_bios Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang [this message]
2011-03-03 6:45 ` [PATCH 08/27] nfs: dirty livelock prevention is now done in VFS Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 09/27] nfs: writeback pages wait queue Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 16:07 ` Peter Zijlstra
2011-03-03 16:07 ` Peter Zijlstra
2011-03-04 1:53 ` Wu Fengguang
2011-03-04 1:53 ` Wu Fengguang
2011-03-03 16:08 ` Peter Zijlstra
2011-03-03 16:08 ` Peter Zijlstra
2011-03-04 2:01 ` Wu Fengguang
2011-03-04 2:01 ` Wu Fengguang
2011-03-04 9:10 ` Peter Zijlstra
2011-03-04 9:10 ` Peter Zijlstra
2011-03-04 9:26 ` Peter Zijlstra
2011-03-04 9:26 ` Peter Zijlstra
2011-03-04 14:38 ` Wu Fengguang
2011-03-04 14:38 ` Wu Fengguang
2011-03-04 14:41 ` Peter Zijlstra
2011-03-04 14:41 ` Peter Zijlstra
2011-03-03 6:45 ` [PATCH 10/27] nfs: limit the commit size to reduce fluctuations Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 11/27] nfs: limit the commit range Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 12/27] nfs: lower writeback threshold proportionally to dirty threshold Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 13/27] writeback: account per-bdi accumulated written pages Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 14/27] writeback: account per-bdi accumulated dirtied pages Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 15/27] writeback: bdi write bandwidth estimation Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 16/27] writeback: smoothed global/bdi dirty pages Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 17/27] writeback: smoothed dirty threshold and limit Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 18/27] writeback: enforce 1/4 gap between the dirty/background thresholds Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 19/27] writeback: dirty throttle bandwidth control Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-07 21:34 ` Wu Fengguang
2011-03-07 21:34 ` Wu Fengguang
2011-03-29 21:08 ` Wu Fengguang
2011-03-29 21:08 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 20/27] writeback: IO-less balance_dirty_pages() Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 21/27] writeback: show bdi write bandwidth in debugfs Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 22/27] writeback: trace dirty_throttle_bandwidth Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 23/27] writeback: trace balance_dirty_pages Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 24/27] writeback: trace global_dirty_state Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 25/27] writeback: make nr_to_write a per-file limit Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 26/27] writeback: scale IO chunk size up to device bandwidth Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` [PATCH 27/27] writeback: trace writeback_single_inode Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 6:45 ` Wu Fengguang
2011-03-03 20:12 ` [PATCH 00/27] IO-less dirty throttling v6 Vivek Goyal
2011-03-03 20:12 ` Vivek Goyal
2011-03-03 20:48 ` Vivek Goyal
2011-03-03 20:48 ` Vivek Goyal
2011-03-04 9:06 ` Wu Fengguang
2011-03-04 9:06 ` Wu Fengguang
2011-04-04 18:12 ` async write IO controllers Wu Fengguang
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