AcoSail/kernel_optimize_test
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Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block

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* 'writeback' of git://git.kernel.dk/linux-2.6-block:
  nfs: initialize the backing_dev_info when creating the server
  writeback: make balance_dirty_pages() gradually back more off
  writeback: don't use schedule_timeout() without setting runstate
  nfs: nfs_kill_super() should call bdi_unregister() after killing super
This commit is contained in:
Linus Torvalds 2009-09-21 09:04:30 -07:00
commit 58e75a0973
3 changed files with 17 additions and 6 deletions
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10
fs/nfs/client.c
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@ -933,10 +933,6 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
goto out_error;
nfs_server_set_fsinfo(server, &fsinfo);
error = bdi_init(&server->backing_dev_info);
if (error)
goto out_error;
/* Get some general file system info */
if (server->namelen == 0) {
@ -995,6 +991,12 @@ static struct nfs_server *nfs_alloc_server(void)
return NULL;
}
if (bdi_init(&server->backing_dev_info)) {
nfs_free_iostats(server->io_stats);
kfree(server);
return NULL;
}
return server;
}

2
fs/nfs/super.c
View File

@ -2190,8 +2190,8 @@ static void nfs_kill_super(struct super_block *s)
{
struct nfs_server *server = NFS_SB(s);
bdi_unregister(&server->backing_dev_info);
kill_anon_super(s);
bdi_unregister(&server->backing_dev_info);
nfs_fscache_release_super_cookie(s);
nfs_free_server(server);
}

11
mm/page-writeback.c
View File

@ -485,6 +485,7 @@ static void balance_dirty_pages(struct address_space *mapping)
unsigned long bdi_thresh;
unsigned long pages_written = 0;
unsigned long write_chunk = sync_writeback_pages();
unsigned long pause = 1;
struct backing_dev_info *bdi = mapping->backing_dev_info;
@ -561,7 +562,15 @@ static void balance_dirty_pages(struct address_space *mapping)
if (pages_written >= write_chunk)
break; /* We've done our duty */
schedule_timeout(1);
schedule_timeout_interruptible(pause);
/*
* Increase the delay for each loop, up to our previous
* default of taking a 100ms nap.
*/
pause <<= 1;
if (pause > HZ / 10)
pause = HZ / 10;
}
if (bdi_nr_reclaimable + bdi_nr_writeback < bdi_thresh &&