linux-ext4 - Re: [PATCH 2/2 v2] ext4: add a variable to record the value of map->m

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 16 Oct 2012 14:44:06 +0200 (CEST)
From:	Lukáš Czerner <lczerner@...hat.com>
To:	Zheng Liu <gnehzuil.liu@...il.com>
cc:	linux-ext4@...r.kernel.org, Lukas Czerner <lczerner@...hat.com>,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: [PATCH 2/2 v2] ext4: add a variable to record the value of
 map->m_flags in tracepoint

On Tue, 16 Oct 2012, Zheng Liu wrote:

> Date: Tue, 16 Oct 2012 20:35:34 +0800
> From: Zheng Liu <gnehzuil.liu@...il.com>
> To: linux-ext4@...r.kernel.org
> Cc: Lukas Czerner <lczerner@...hat.com>, Zheng Liu <wenqing.lz@...bao.com>
> Subject: [PATCH 2/2 v2] ext4: add a variable to record the value of
>     map->m_flags in tracepoint
> 
> From: Zheng Liu <wenqing.lz@...bao.com>
> 
> When we use trace_ext4_ext/ind_map_blocks_exit, we will print the value of
> map->m_flags in order that we can understand what currently status is.
> 
> CC: Lukas Czerner <lczerner@...hat.com>
> Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>

Looks good, thanks!

Reviewed-by: Lukas Czerner <lczerner@...hat.com>

> ---
> v2 <- v1:
> 	pass the whole ext4_map_blocks instead of lblk, pblk, flags and len
> 	change type of 'flags' from 'int' to 'unsigned int'
> 
>  fs/ext4/extents.c           |  3 +--
>  fs/ext4/indirect.c          |  3 +--
>  include/trace/events/ext4.h | 27 +++++++++++++--------------
>  3 files changed, 15 insertions(+), 18 deletions(-)
> 
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index 4ecc210..a29b3f8 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -4249,8 +4249,7 @@ out2:
>  		kfree(path);
>  	}
>  
> -	trace_ext4_ext_map_blocks_exit(inode, map->m_lblk,
> -		newblock, map->m_len, err ? err : allocated);
> +	trace_ext4_ext_map_blocks_exit(inode, map, err ? err : allocated);
>  
>  	return err ? err : allocated;
>  }
> diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
> index 792e388..292337f 100644
> --- a/fs/ext4/indirect.c
> +++ b/fs/ext4/indirect.c
> @@ -755,8 +755,7 @@ cleanup:
>  		partial--;
>  	}
>  out:
> -	trace_ext4_ind_map_blocks_exit(inode, map->m_lblk,
> -				map->m_pblk, map->m_len, err);
> +	trace_ext4_ind_map_blocks_exit(inode, map, err);
>  	return err;
>  }
>  
> diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
> index 25914e3..d2a125a 100644
> --- a/include/trace/events/ext4.h
> +++ b/include/trace/events/ext4.h
> @@ -1519,10 +1519,9 @@ DEFINE_EVENT(ext4__map_blocks_enter, ext4_ind_map_blocks_enter,
>  );
>  
>  DECLARE_EVENT_CLASS(ext4__map_blocks_exit,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk,
> -		 ext4_fsblk_t pblk, unsigned int len, int ret),
> +	TP_PROTO(struct inode *inode, struct ext4_map_blocks *map, int ret),
>  
> -	TP_ARGS(inode, lblk, pblk, len, ret),
> +	TP_ARGS(inode, map, ret),
>  
>  	TP_STRUCT__entry(
>  		__field(	dev_t,		dev		)
> @@ -1530,37 +1529,37 @@ DECLARE_EVENT_CLASS(ext4__map_blocks_exit,
>  		__field(	ext4_fsblk_t,	pblk		)
>  		__field(	ext4_lblk_t,	lblk		)
>  		__field(	unsigned int,	len		)
> +		__field(	unsigned int,	flags		)
>  		__field(	int,		ret		)
>  	),
>  
>  	TP_fast_assign(
>  		__entry->dev    = inode->i_sb->s_dev;
>  		__entry->ino    = inode->i_ino;
> -		__entry->pblk	= pblk;
> -		__entry->lblk	= lblk;
> -		__entry->len	= len;
> +		__entry->pblk	= map->m_pblk;
> +		__entry->lblk	= map->m_lblk;
> +		__entry->len	= map->m_len;
> +		__entry->flags	= map->m_flags;
>  		__entry->ret	= ret;
>  	),
>  
> -	TP_printk("dev %d,%d ino %lu lblk %u pblk %llu len %u ret %d",
> +	TP_printk("dev %d,%d ino %lu lblk %u pblk %llu len %u flags %x ret %d",
>  		  MAJOR(__entry->dev), MINOR(__entry->dev),
>  		  (unsigned long) __entry->ino,
>  		  __entry->lblk, __entry->pblk,
> -		  __entry->len, __entry->ret)
> +		  __entry->len, __entry->flags, __entry->ret)
>  );
>  
>  DEFINE_EVENT(ext4__map_blocks_exit, ext4_ext_map_blocks_exit,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk,
> -		 ext4_fsblk_t pblk, unsigned len, int ret),
> +	TP_PROTO(struct inode *inode, struct ext4_map_blocks *map, int ret),
>  
> -	TP_ARGS(inode, lblk, pblk, len, ret)
> +	TP_ARGS(inode, map, ret)
>  );
>  
>  DEFINE_EVENT(ext4__map_blocks_exit, ext4_ind_map_blocks_exit,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk,
> -		 ext4_fsblk_t pblk, unsigned len, int ret),
> +	TP_PROTO(struct inode *inode, struct ext4_map_blocks *map, int ret),
>  
> -	TP_ARGS(inode, lblk, pblk, len, ret)
> +	TP_ARGS(inode, map, ret)
>  );
>  
>  TRACE_EVENT(ext4_ext_load_extent,
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html