diff mbox

[RFC,8/8] ext4: enable encryption for blocksize less than page size

Message ID 20180112141129.27507-9-chandan@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Chandan Rajendra Jan. 12, 2018, 2:11 p.m. UTC
Now that we have all the code to support encryption for block size less
than page size scenario, this commit removes the conditional check in
filesystem mount code.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
---
 fs/ext4/super.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

Comments

Eric Biggers Jan. 17, 2018, 2:40 a.m. UTC | #1
On Fri, Jan 12, 2018 at 07:41:29PM +0530, Chandan Rajendra wrote:
> Now that we have all the code to support encryption for block size less
> than page size scenario, this commit removes the conditional check in
> filesystem mount code.
> 
> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
> ---
>  fs/ext4/super.c | 9 +--------
>  1 file changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index ebb7edb..5a52c98 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -4138,14 +4138,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
>  		}
>  	}
>  
> -	if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
> -	    (blocksize != PAGE_SIZE)) {
> -		ext4_msg(sb, KERN_ERR,
> -			 "Unsupported blocksize for fs encryption");
> -		goto failed_mount_wq;
> -	}
> -
> -	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !sb_rdonly(sb) &&
> +	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !(sb->s_flags & MS_RDONLY) &&
>  	    !ext4_has_feature_encrypt(sb)) {
>  		ext4_set_feature_encrypt(sb);
>  		ext4_commit_super(sb, 1);

Why change sb_rdonly() to 'sb->s_flags & MS_RDONLY'?

Eric
Chandan Rajendra Jan. 17, 2018, 1:42 p.m. UTC | #2
On Wednesday, January 17, 2018 8:10:04 AM IST Eric Biggers wrote:
> On Fri, Jan 12, 2018 at 07:41:29PM +0530, Chandan Rajendra wrote:
> > Now that we have all the code to support encryption for block size less
> > than page size scenario, this commit removes the conditional check in
> > filesystem mount code.
> > 
> > Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
> > ---
> >  fs/ext4/super.c | 9 +--------
> >  1 file changed, 1 insertion(+), 8 deletions(-)
> > 
> > diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> > index ebb7edb..5a52c98 100644
> > --- a/fs/ext4/super.c
> > +++ b/fs/ext4/super.c
> > @@ -4138,14 +4138,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> >  		}
> >  	}
> >  
> > -	if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
> > -	    (blocksize != PAGE_SIZE)) {
> > -		ext4_msg(sb, KERN_ERR,
> > -			 "Unsupported blocksize for fs encryption");
> > -		goto failed_mount_wq;
> > -	}
> > -
> > -	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !sb_rdonly(sb) &&
> > +	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !(sb->s_flags & MS_RDONLY) &&
> >  	    !ext4_has_feature_encrypt(sb)) {
> >  		ext4_set_feature_encrypt(sb);
> >  		ext4_commit_super(sb, 1);
> 
> Why change sb_rdonly() to 'sb->s_flags & MS_RDONLY'?
> 

I am sorry, I messed up this one when rebasing the patchset onto the 
latest linux-next. . The old code base had 'sb->s_flags & MS_RDONLY'.
I will fix this up in the next version of this patchset.
diff mbox

Patch

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ebb7edb..5a52c98 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4138,14 +4138,7 @@  static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		}
 	}
 
-	if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
-	    (blocksize != PAGE_SIZE)) {
-		ext4_msg(sb, KERN_ERR,
-			 "Unsupported blocksize for fs encryption");
-		goto failed_mount_wq;
-	}
-
-	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !sb_rdonly(sb) &&
+	if (DUMMY_ENCRYPTION_ENABLED(sbi) && !(sb->s_flags & MS_RDONLY) &&
 	    !ext4_has_feature_encrypt(sb)) {
 		ext4_set_feature_encrypt(sb);
 		ext4_commit_super(sb, 1);