diff mbox

[1/3] Btrfs: fix missing write access release in btrfs_ioctl_resize()

Message ID 50D42998.1010100@cn.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Miao Xie Dec. 21, 2012, 9:19 a.m. UTC
We forget to give up the write access after we find some device operation
is going on. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
 fs/btrfs/ioctl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Stefan Behrens Dec. 21, 2012, 10:22 a.m. UTC | #1
On Fri, 21 Dec 2012 17:19:20 +0800, Miao Xie wrote:
> -		pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
> +		pr_info("btrfs: dev add/delete/balance/replace/resize operation"
> +			" in progress\n");
> +		mnt_drop_write_file(file);

grep and vi cannot do searches spanning multiple lines. That's why I
created this pr_info() line with more than 80 columns (in accordance
with Documentation/CodingStyle BTW ("never break user-visible strings")).

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Miao Xie Dec. 21, 2012, 10:35 a.m. UTC | #2
On Fri, 21 Dec 2012 11:22:52 +0100, Stefan Behrens wrote:
> On Fri, 21 Dec 2012 17:19:20 +0800, Miao Xie wrote:
>> -		pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
>> +		pr_info("btrfs: dev add/delete/balance/replace/resize operation"
>> +			" in progress\n");
>> +		mnt_drop_write_file(file);
> 
> grep and vi cannot do searches spanning multiple lines. That's why I
> created this pr_info() line with more than 80 columns (in accordance
> with Documentation/CodingStyle BTW ("never break user-visible strings")).
> 

You are right. I will update the patch soon.

Thanks
Miao

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diff mbox

Patch

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 7624212..679b82c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1338,7 +1338,9 @@  static noinline int btrfs_ioctl_resize(struct file *file,
 
 	if (atomic_xchg(&root->fs_info->mutually_exclusive_operation_running,
 			1)) {
-		pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
+		pr_info("btrfs: dev add/delete/balance/replace/resize operation"
+			" in progress\n");
+		mnt_drop_write_file(file);
 		return -EINPROGRESS;
 	}