[PATCH] docs: ext4 filesystems can be converted to 64-bit

[Stephen Kitt]

Since commit fe12931 ("resize2fs: convert fs to and from 64bit mode")
in e2fsprogs, which shipped in version 1.43, resize2fs can convert
filesystems from 32-bit to 64-bit and back, so the mention in the
checksum documentation that this is impossible is obsolete. This fixes
that.

Signed-off-by: Stephen Kitt <steve@xxxxxxx>
---
 Documentation/filesystems/ext4/checksums.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/filesystems/ext4/checksums.rst b/Documentation/filesystems/ext4/checksums.rst
index e232749daf5f..51a2150a1bf8 100644
--- a/Documentation/filesystems/ext4/checksums.rst
+++ b/Documentation/filesystems/ext4/checksums.rst
@@ -10,9 +10,9 @@ of October 2012 the only supported algorithm is crc32c. Some data
 structures did not have space to fit a full 32-bit checksum, so only the
 lower 16 bits are stored. Enabling the 64bit feature increases the data
 structure size so that full 32-bit checksums can be stored for many data
-structures. However, existing 32-bit filesystems cannot be extended to
-enable 64bit mode, at least not without the experimental resize2fs
-patches to do so.
+structures. ``resize2fs`` in ``e2fsprogs`` 1.43 or later can be used to
+convert filesystems from 32-bit to 64-bit and back (using the ``-b``
+and ``-s`` options).
 
 Existing filesystems can have checksumming added by running
 ``tune2fs -O metadata_csum`` against the underlying device. If tune2fs
-- 
2.56.0