From: Liu Bo <liubo2009@cn.fujitsu.com>
To: <linux-btrfs@vger.kernel.org>
Subject: [PATCH 3/4 v2] Btrfs: use mnt_want_write_file instead of mnt_want_write
Date: Fri, 29 Jun 2012 17:58:48 +0800 [thread overview]
Message-ID: <1340963929-32509-3-git-send-email-liubo2009@cn.fujitsu.com> (raw)
In-Reply-To: <1340963929-32509-1-git-send-email-liubo2009@cn.fujitsu.com>
mnt_want_write_file is faster when file has been opened for write.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
---
fs/btrfs/ioctl.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 069cd85..df4c04d 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3261,7 +3261,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- ret = mnt_want_write(file->f_path.mnt);
+ ret = mnt_want_write_file(file);
if (ret)
return ret;
@@ -3331,7 +3331,7 @@ out_bargs:
out:
mutex_unlock(&fs_info->balance_mutex);
mutex_unlock(&fs_info->volume_mutex);
- mnt_drop_write(file->f_path.mnt);
+ mnt_drop_write_file(file);
return ret;
}
--
1.6.5.2
next prev parent reply other threads:[~2012-06-29 9:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 9:58 [PATCH 1/4 v2] Btrfs: check write access to mount earlier while creating snapshots Liu Bo
2012-06-29 9:58 ` [PATCH 2/4 v2] Btrfs: remove redundant r/o check for superblock Liu Bo
2012-06-29 9:58 ` Liu Bo [this message]
2012-06-29 9:58 ` [PATCH 4/4 v2] Btrfs: do not set subvolume flags in readonly mode Liu Bo
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