From: liubo <liubo2009@cn.fujitsu.com>
To: Linux Btrfs <linux-btrfs@vger.kernel.org>
Cc: Josef Bacik <josef@redhat.com>, liubo <liubo2009@cn.fujitsu.com>
Subject: [RFC PATCH 2/4 v2] Btrfs: avoid transaction stuff when readonly
Date: Wed, 01 Dec 2010 18:20:25 +0800 [thread overview]
Message-ID: <4CF62169.8000702@cn.fujitsu.com> (raw)
When the filesystem is readonly, avoid transaction stuff by checking MS_RDONLY at
start transaction time.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
---
fs/btrfs/transaction.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 1fffbc0..14a597d 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -181,6 +181,9 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
struct btrfs_trans_handle *h;
struct btrfs_transaction *cur_trans;
int ret;
+
+ if (root->fs_info->sb->s_flags & MS_RDONLY)
+ return ERR_PTR(-EROFS);
again:
h = kmem_cache_alloc(btrfs_trans_handle_cachep, GFP_NOFS);
if (!h)
--
1.7.1
next reply other threads:[~2010-12-01 10:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-01 10:20 liubo [this message]
2010-12-02 3:42 ` [RFC PATCH 2/4 v2] Btrfs: avoid transaction stuff when readonly liubo
2010-12-02 4:28 ` Yan, Zheng
2010-12-02 5:38 ` liubo
2010-12-02 5:41 ` Mike Fedyk
2010-12-02 6:36 ` liubo
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