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| author | Wu Bo <bo.wu@vivo.com> | 2023-02-22 09:35:24 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2023-03-07 20:24:05 -0500 |
| commit | b7eef407e5271f5135ce97bfd6e2e5009922331e (patch) | |
| tree | 286888af6f279d86a667877c9da2933949ffd392 | |
| parent | c993799baf9c5861f8df91beb80e1611b12efcbd (diff) | |
docs: ext4: modify the group desc size to 64
Since the default ext4 group desc size is 64 now (assuming that the
64-bit feature is enbled). And the size mentioned in this doc is 64 too.
Change it to 64.
Signed-off-by: Wu Bo <bo.wu@vivo.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20230222013525.14748-1-bo.wu@vivo.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | Documentation/filesystems/ext4/blockgroup.rst | 6 |
1 files 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 |