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Documentation: ext4: atomic_writes: Demote last three sections

Last three sections of atomic block writes documentation are adorned as
first-level title headings, which erroneously increase toctree entries
in overview.rst. Demote them.

Fixes: 0bf1f51e34c4 ("ext4: Add atomic block write documentation")
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250620105643.25141-5-bagasdotme@gmail.com

authored by

Bagas Sanjaya and committed by
Jonathan Corbet 5717d2dc 859fac2c

+5 -5
+5 -5
Documentation/filesystems/ext4/atomic_writes.rst
··· 148 148 only required to handle a split extent across leaf blocks. 149 149 150 150 How to 151 - ------ 151 + ~~~~~~ 152 152 153 153 Creating Filesystems with Atomic Write Support 154 - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 154 + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 155 155 156 156 First check the atomic write units supported by block device. 157 157 See :ref:`atomic_write_bdev_support` for more details. ··· 176 176 and ``-O bigalloc`` enables the bigalloc feature. 177 177 178 178 Application Interface 179 - ~~~~~~~~~~~~~~~~~~~~~ 179 + ^^^^^^^^^^^^^^^^^^^^^ 180 180 181 181 Applications can use the ``pwritev2()`` system call with the ``RWF_ATOMIC`` flag 182 182 to perform atomic writes: ··· 204 204 .. _atomic_write_bdev_support: 205 205 206 206 Hardware Support 207 - ---------------- 207 + ~~~~~~~~~~~~~~~~ 208 208 209 209 The underlying storage device must support atomic write operations. 210 210 Modern NVMe and SCSI devices often provide this capability. ··· 217 217 atomic writes. 218 218 219 219 See Also 220 - -------- 220 + ~~~~~~~~ 221 221 222 222 * :doc:`bigalloc` - Documentation on the bigalloc feature 223 223 * :doc:`allocators` - Documentation on block allocation in ext4