On Wed, Feb 07, 2024 at 02:06:19PM -0600, Timur Tabi wrote:
> debugfs_create_blob() is given the size of the blob, so use it to
> also set the size of the dentry. For example, efi=debug previously
> showed
>
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_code0
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_code1
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_data0
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_data1
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_data2
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_data3
> -r-------- 1 root root 0 Feb 7 13:30 boot_services_data4
>
> but with this patch it shows
>
> -r-------- 1 root root 12783616 Feb 7 13:26 boot_services_code0
> -r-------- 1 root root 262144 Feb 7 13:26 boot_services_code1
> -r-------- 1 root root 41705472 Feb 7 13:26 boot_services_data0
> -r-------- 1 root root 23187456 Feb 7 13:26 boot_services_data1
> -r-------- 1 root root 110645248 Feb 7 13:26 boot_services_data2
> -r-------- 1 root root 1048576 Feb 7 13:26 boot_services_data3
> -r-------- 1 root root 4096 Feb 7 13:26 boot_services_data4
>
> Signed-off-by: Timur Tabi <ttabi@xxxxxxxxxx>
> ---
> fs/debugfs/file.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
> index c6f4a9a98b85..d97800603a8f 100644
> --- a/fs/debugfs/file.c
> +++ b/fs/debugfs/file.c
> @@ -1152,7 +1152,14 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode,
> struct dentry *parent,
> struct debugfs_blob_wrapper *blob)
> {
> - return debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob);
> + struct dentry *dentry;
> +
> + dentry = debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob);
> + if (!IS_ERR(dentry))
> + d_inode(dentry)->i_size = blob->size;
Aren't you supposed to use i_size_write for this?
--D
> +
> + return dentry;
> +
> }
> EXPORT_SYMBOL_GPL(debugfs_create_blob);
>
> --
> 2.34.1
>
>
