lkml.org 
[lkml]   [2011]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] fs/ext4: add missing ext4_resize_end
From
Thanks.

The patch looks good. I have to update the new resize patch too.

Yongqiang.

On Thu, Dec 22, 2011 at 11:00 PM, Djalal Harouni <tixxdz@opendz.org> wrote:
> Online resize ioctls 'EXT4_IOC_GROUP_EXTEND' and 'EXT4_IOC_GROUP_ADD'
> call ext4_resize_begin() to check permissions and to set the
> EXT4_RESIZING bit lock, they do their work and they must finish with
> ext4_resize_end() which calls clear_bit_unlock() to unlock and to
> avoid -EBUSY errors for the next resize operations.
>
> This patch adds the missing ext4_resize_end() calls on error paths.
>
> Patch tested.
>
> Cc: stable@vger.kernel.org
> Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
> ---
>  fs/ext4/ioctl.c |   28 ++++++++++++++++++----------
>  1 files changed, 18 insertions(+), 10 deletions(-)
>
> diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
> index a567968..ab25f57 100644
> --- a/fs/ext4/ioctl.c
> +++ b/fs/ext4/ioctl.c
> @@ -182,19 +182,22 @@ setversion_out:
>                if (err)
>                        return err;
>
> -               if (get_user(n_blocks_count, (__u32 __user *)arg))
> -                       return -EFAULT;
> +               if (get_user(n_blocks_count, (__u32 __user *)arg)) {
> +                       err = -EFAULT;
> +                       goto group_extend_out;
> +               }
>
>                if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
>                               EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
>                        ext4_msg(sb, KERN_ERR,
>                                 "Online resizing not supported with bigalloc");
> -                       return -EOPNOTSUPP;
> +                       err = -EOPNOTSUPP;
> +                       goto group_extend_out;
>                }
>
>                err = mnt_want_write(filp->f_path.mnt);
>                if (err)
> -                       return err;
> +                       goto group_extend_out;
>
>                err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
>                if (EXT4_SB(sb)->s_journal) {
> @@ -204,9 +207,10 @@ setversion_out:
>                }
>                if (err == 0)
>                        err = err2;
> +
>                mnt_drop_write(filp->f_path.mnt);
> +group_extend_out:
>                ext4_resize_end(sb);
> -
>                return err;
>        }
>
> @@ -267,19 +271,22 @@ mext_out:
>                        return err;
>
>                if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
> -                               sizeof(input)))
> -                       return -EFAULT;
> +                               sizeof(input))) {
> +                       err = -EFAULT;
> +                       goto group_add_out;
> +               }
>
>                if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
>                               EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
>                        ext4_msg(sb, KERN_ERR,
>                                 "Online resizing not supported with bigalloc");
> -                       return -EOPNOTSUPP;
> +                       err = -EOPNOTSUPP;
> +                       goto group_add_out;
>                }
>
>                err = mnt_want_write(filp->f_path.mnt);
>                if (err)
> -                       return err;
> +                       goto group_add_out;
>
>                err = ext4_group_add(sb, &input);
>                if (EXT4_SB(sb)->s_journal) {
> @@ -289,9 +296,10 @@ mext_out:
>                }
>                if (err == 0)
>                        err = err2;
> +
>                mnt_drop_write(filp->f_path.mnt);
> +group_add_out:
>                ext4_resize_end(sb);
> -
>                return err;
>        }
>
> --
> 1.7.1
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/



--
Best Wishes
Yongqiang Yang
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-12-23 02:17    [W:0.109 / U:1.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site