From: Edmund Nadolski <enadolski@suse.com>
To: enadolski@suse.com, dsterba@suse.cz, jeffm@suse.com,
linux-btrfs@vger.kernel.org, lufq.fnst@cn.fujitsu.com
Subject: [PATCH v3 11/13] btrfs: add cond_resched() calls when resolving backrefs
Date: Wed, 12 Jul 2017 16:20:09 -0600 [thread overview]
Message-ID: <20170712222011.26705-5-enadolski@suse.com> (raw)
In-Reply-To: <20170712222011.26705-1-enadolski@suse.com>
Since backref resolution is CPU-intensive, the cond_resched calls
should help alleviate soft lockup occurences.
Signed-off-by: Edmund Nadolski <enadolski@suse.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/backref.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 19c9e92..c1882e5 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -660,6 +660,7 @@ static int resolve_indirect_refs(struct btrfs_fs_info *fs_info,
prelim_ref_insert(fs_info, &preftrees->direct, ref);
ulist_reinit(parents);
+ cond_resched();
}
out:
ulist_free(parents);
@@ -702,6 +703,7 @@ static int add_missing_keys(struct btrfs_fs_info *fs_info,
btrfs_tree_read_unlock(eb);
free_extent_buffer(eb);
prelim_ref_insert(fs_info, &preftrees->indirect, ref);
+ cond_resched();
}
return 0;
}
@@ -1243,6 +1245,7 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
}
eie = NULL;
}
+ cond_resched();
}
out:
--
2.10.2
next prev parent reply other threads:[~2017-07-12 22:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-12 22:20 [PATCH v3 00/13] use rbtrees for preliminary backrefs Edmund Nadolski
2017-07-12 22:20 ` [PATCH v3 08/13] btrfs: convert prelimary reference tracking to use rbtrees Edmund Nadolski
2017-07-28 18:25 ` Liu Bo
2017-07-12 22:20 ` [PATCH v3 09/13] btrfs: add a node counter to each of the rbtrees Edmund Nadolski
2017-07-13 0:51 ` David Sterba
2017-07-12 22:20 ` [PATCH v3 10/13] btrfs: backref, add tracepoints for prelim_ref insertion and merging Edmund Nadolski
2017-07-13 0:18 ` David Sterba
2017-07-12 22:20 ` Edmund Nadolski [this message]
2017-07-13 0:08 ` [PATCH v3 11/13] btrfs: add cond_resched() calls when resolving backrefs David Sterba
2017-07-12 22:20 ` [PATCH v3 12/13] btrfs: allow backref search checks for shared extents Edmund Nadolski
2017-07-28 18:41 ` Liu Bo
2017-07-12 22:20 ` [PATCH v3 13/13] btrfs: clean up extraneous computations in add_delayed_refs Edmund Nadolski
2017-07-13 0:08 ` David Sterba
2017-07-28 14:54 ` [PATCH v3 00/13] use rbtrees for preliminary backrefs David Sterba
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