Re: [f2fs-dev] [PATCHv2 2/5] block: report direct io attributes through file_getattr
Christoph Hellwig <[email protected]> Mon, 13 Jul 2026 04:57:01 -0700
| Newsgroups | net.sourceforge.lists.linux-f2fs-devel,org.kernel.vger.linux-block,org.kernel.vger.linux-ext4,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-xfs |
|---|---|
| Message-ID | <[email protected]> |
> #include "internal.h"
>
> @@ -88,13 +89,16 @@ int vfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa)
> struct inode *inode = d_inode(dentry);
> int error;
>
> - if (!inode->i_op->fileattr_get)
> + if (!inode->i_op->fileattr_get && !S_ISBLK(inode->i_mode))
> return -ENOIOCTLCMD;
>
> error = security_inode_file_getattr(dentry, fa);
> if (error)
> return error;
>
> + if (!inode->i_op->fileattr_get)
> + return bdev_fileattr(inode, fa);
> +
> return inode->i_op->fileattr_get(dentry, fa);
While this is correct, it reads a bit odd as the check above
required the S_ISBLK above. I'd be tempted to move the
-ENOIOCTLCMD below the seurity check to mae it more obvious:
error = security_inode_file_getattr(dentry, fa);
if (error)
return error;
if (!inode->i_op->fileattr_get) {
if (!S_ISBLK(inode->i_mode))
return -ENOIOCTLCMD;
return bdev_fileattr(inode, fa);
}
...
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