[PATCH] docs: ext4: modify the group desc size to 64

[PATCH] docs: ext4: modify the group desc size to 64

[Wu Bo]

Since the default ext4 group desc size is 64 now and the size mentioned
in this doc is 64 too. Change it to 64.

Signed-off-by: Wu Bo <bo.wu@vivo.com>
---
 Documentation/filesystems/ext4/blockgroup.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/filesystems/ext4/blockgroup.rst b/Documentation/filesystems/ext4/blockgroup.rst
index 46d78f860623..ed5a5cac6d40 100644
--- a/Documentation/filesystems/ext4/blockgroup.rst
+++ b/Documentation/filesystems/ext4/blockgroup.rst
@@ -105,9 +105,9 @@ descriptors. Instead, the superblock and a single block group descriptor
 block is placed at the beginning of the first, second, and last block
 groups in a meta-block group. A meta-block group is a collection of
 block groups which can be described by a single block group descriptor
-block. Since the size of the block group descriptor structure is 32
-bytes, a meta-block group contains 32 block groups for filesystems with
-a 1KB block size, and 128 block groups for filesystems with a 4KB
+block. Since the size of the block group descriptor structure is 64
+bytes, a meta-block group contains 16 block groups for filesystems with
+a 1KB block size, and 64 block groups for filesystems with a 4KB
 blocksize. Filesystems can either be created using this new block group
 descriptor layout, or existing filesystems can be resized on-line, and
 the field s_first_meta_bg in the superblock will indicate the first
-- 
2.35.3

Re: [PATCH] docs: ext4: modify the group desc size to 64

[Theodore Ts'o]

On Mon, Feb 20, 2023 at 07:06:37PM +0800, Wu Bo wrote:
> Since the default ext4 group desc size is 64 now and the size mentioned
> in this doc is 64 too. Change it to 64.
> 
> Signed-off-by: Wu Bo <bo.wu@vivo.com>

Could you please a parenthetical comment: "(assuming that the 64-bit
feature is enbled)"?

Thanks!

					- Ted