Re: [PATCH] ext4: fix FITRIM in no journal mode

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On Mon, Jan 06, 2014 at 05:29:37PM +0100, Lukas Czerner wrote:
> Upstream commit: 8f9ff189205a6817aee5a1f996f876541f86e07c
> Stable version: 3.12.y

I'm also queuing it for the 3.11 kernel.  Thanks!

Cheers,
--
Luis


> When using FITRIM ioctl on a file system without journal it will
> only trim the block group once, no matter how many times you invoke
> FITRIM ioctl and how many block you release from the block group.
> 
> It is because we only clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT in journal
> callback. Fix this by clearing the bit in no journal mode as well.
> 
> Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
> Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
> Reported-by: Jorge Fábregas <jorge.fabregas@xxxxxxxxx>
> ---
>  fs/ext4/mballoc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
> index a41e3ba..4d113ef 100644
> --- a/fs/ext4/mballoc.c
> +++ b/fs/ext4/mballoc.c
> @@ -4794,8 +4794,8 @@ do_more:
>  					 " group:%d block:%d count:%lu failed"
>  					 " with %d", block_group, bit, count,
>  					 err);
> -		}
> -
> +		} else
> +			EXT4_MB_GRP_CLEAR_TRIMMED(e4b.bd_info);
>  
>  		ext4_lock_group(sb, block_group);
>  		mb_clear_bits(bitmap_bh->b_data, bit, count_clusters);
> -- 
> 1.8.3.1
> 
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