Re: [PATCH 4/5] Btrfs: fix unprotected extent map operation when logging file extents

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Nov 01, 2012 at 03:34:54PM +0800, Miao Xie wrote:
> We forget to protect the modified_extents list, fix it.
> 

Looks good to me.

Reviewed-by: Liu Bo <bo.li.liu@xxxxxxxxxx>

thanks,
liubo

> Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
> ---
>  fs/btrfs/tree-log.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
> index cbb544e..f7e9387 100644
> --- a/fs/btrfs/tree-log.c
> +++ b/fs/btrfs/tree-log.c
> @@ -3525,8 +3525,10 @@ next_slot:
>  		struct extent_map_tree *tree = &BTRFS_I(inode)->extent_tree;
>  		struct extent_map *em, *n;
>  
> +		write_lock(&tree->lock);
>  		list_for_each_entry_safe(em, n, &tree->modified_extents, list)
>  			list_del_init(&em->list);
> +		write_unlock(&tree->lock);
>  	}
>  
>  	if (inode_only == LOG_INODE_ALL && S_ISDIR(inode->i_mode)) {
> -- 
> 1.7.6.5
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Filesystem Development]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux