diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/fsverity.rst | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/filesystems/fsverity.rst b/Documentation/filesystems/fsverity.rst index 948d20254524..c0c8a25b41bb 100644 --- a/Documentation/filesystems/fsverity.rst +++ b/Documentation/filesystems/fsverity.rst @@ -497,9 +497,11 @@ To create verity files on an ext4 filesystem, the filesystem must have been formatted with ``-O verity`` or had ``tune2fs -O verity`` run on it. "verity" is an RO_COMPAT filesystem feature, so once set, old kernels will only be able to mount the filesystem readonly, and old -versions of e2fsck will be unable to check the filesystem. Moreover, -currently ext4 only supports mounting a filesystem with the "verity" -feature when its block size is equal to PAGE_SIZE (often 4096 bytes). +versions of e2fsck will be unable to check the filesystem. + +Originally, an ext4 filesystem with the "verity" feature could only be +mounted when its block size was equal to the system page size +(typically 4096 bytes). In Linux v6.3, this limitation was removed. ext4 sets the EXT4_VERITY_FL on-disk inode flag on verity files. It can only be set by `FS_IOC_ENABLE_VERITY`_, and it cannot be cleared. |