Re: [PATCH 1/2] dax: pass bdev argument to dax_clear_blocks()

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

 



On Sun, Feb 07, 2016 at 12:19:12AM -0700, Ross Zwisler wrote:
> dax_clear_blocks() needs a valid struct block_device and previously it was
> using inode->i_sb->s_bdev in all cases.  This is correct for normal inodes
> on mounted ext2, ext4 and XFS filesystems, but is incorrect for DAX raw
> block devices and for XFS real-time devices.
> 
> Instead, have the caller pass in a struct block_device pointer which it
> knows to be correct.
....
> diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> index 07ef29b..f722ba2 100644
> --- a/fs/xfs/xfs_bmap_util.c
> +++ b/fs/xfs/xfs_bmap_util.c
> @@ -73,9 +73,11 @@ xfs_zero_extent(
>  	xfs_daddr_t	sector = xfs_fsb_to_db(ip, start_fsb);
>  	sector_t	block = XFS_BB_TO_FSBT(mp, sector);
>  	ssize_t		size = XFS_FSB_TO_B(mp, count_fsb);
> +	struct inode	*inode = VFS_I(ip);
>  
>  	if (IS_DAX(VFS_I(ip)))
> -		return dax_clear_blocks(VFS_I(ip), block, size);
> +		return dax_clear_blocks(inode, xfs_find_bdev_for_inode(inode),
> +				block, size);

Get rid of the local inode variable and use VFS_I(ip) like the code
originally did. Do not change code that is unrelated to the
modifcation being made, especially when it results in making
the code an inconsistent mess of mixed pointer constructs....

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Reiser Filesystem Development]     [Ceph FS]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite National Park]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]     [Linux Media]

  Powered by Linux