[Ocfs2-devel] [PATCH 1/1] ocfs2: Bugfix for hard readonly mount

[Joel Becker]

On Sat, May 28, 2011 at 12:34:19AM +0800, Tiger Yang wrote:
> This patch fixes few bugs when do hard readonly mount.
> see detail: http://oss.oracle.com/bugzilla/show_bug.cgi?id=1322
> 
> Signed-off-by: Tiger Yang <tiger.yang at oracle.com>

This patch is now in the 'fixes' branch of ocfs2.git.

Joel

> ---
>  fs/ocfs2/dlmglue.c |   21 +++++++++++++++------
>  fs/ocfs2/super.c   |    3 ++-
>  2 files changed, 17 insertions(+), 7 deletions(-)
> 
> diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
> index 7642d7c..da103f5 100644
> --- a/fs/ocfs2/dlmglue.c
> +++ b/fs/ocfs2/dlmglue.c
> @@ -1692,7 +1692,7 @@ int ocfs2_open_lock(struct inode *inode)
>  	mlog(0, "inode %llu take PRMODE open lock\n",
>  	     (unsigned long long)OCFS2_I(inode)->ip_blkno);
>  
> -	if (ocfs2_mount_local(osb))
> +	if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
>  		goto out;
>  
>  	lockres = &OCFS2_I(inode)->ip_open_lockres;
> @@ -1718,6 +1718,12 @@ int ocfs2_try_open_lock(struct inode *inode, int write)
>  	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
>  	     write ? "EXMODE" : "PRMODE");
>  
> +	if (ocfs2_is_hard_readonly(osb)) {
> +		if (write)
> +			status = -EROFS;
> +		goto out;
> +	}
> +
>  	if (ocfs2_mount_local(osb))
>  		goto out;
>  
> @@ -2298,7 +2304,7 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
>  	if (ocfs2_is_hard_readonly(osb)) {
>  		if (ex)
>  			status = -EROFS;
> -		goto bail;
> +		goto getbh;
>  	}
>  
>  	if (ocfs2_mount_local(osb))
> @@ -2356,7 +2362,7 @@ local:
>  			mlog_errno(status);
>  		goto bail;
>  	}
> -
> +getbh:
>  	if (ret_bh) {
>  		status = ocfs2_assign_bh(inode, ret_bh, local_bh);
>  		if (status < 0) {
> @@ -2628,8 +2634,11 @@ int ocfs2_dentry_lock(struct dentry *dentry, int ex)
>  
>  	BUG_ON(!dl);
>  
> -	if (ocfs2_is_hard_readonly(osb))
> -		return -EROFS;
> +	if (ocfs2_is_hard_readonly(osb)) {
> +		if (ex)
> +			return -EROFS;
> +		return 0;
> +	}
>  
>  	if (ocfs2_mount_local(osb))
>  		return 0;
> @@ -2647,7 +2656,7 @@ void ocfs2_dentry_unlock(struct dentry *dentry, int ex)
>  	struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
>  	struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);
>  
> -	if (!ocfs2_mount_local(osb))
> +	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))
>  		ocfs2_cluster_unlock(osb, &dl->dl_lockres, level);
>  }
>  
> diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
> index 5a521c7..395b26f 100644
> --- a/fs/ocfs2/super.c
> +++ b/fs/ocfs2/super.c
> @@ -1973,7 +1973,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
>  	 * If we failed before we got a uuid_str yet, we can't stop
>  	 * heartbeat.  Otherwise, do it.
>  	 */
> -	if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str)
> +	if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
> +	    !ocfs2_is_hard_readonly(osb))
>  		hangup_needed = 1;
>  
>  	if (osb->cconn)
> -- 
> 1.7.4.4
> 

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