Re: [PATCH v4 0/2] man/man2/mremap.2: describe multiple mapping move, shrink

[Lorenzo Stoakes <lorenzo.stoakes@oracle.com>]

On Tue, Aug 05, 2025 at 06:31:54PM +0100, Lorenzo Stoakes wrote:
> We have added new functionality to mremap() in Linux 6.17, permitting the
> move of multiple VMAs when performing a move alone (that is - providing
> MREMAP_MAYMOVE | MREMAP_FIXED flags and specifying old_size == new_size).
>
> We document this new feature.
>
> Additionally, we document previously undocumented behaviour around
> shrinking of input VMA ranges which permits the input range to span
> multiple VMAs.
>
> v4:
> * Update description of newly discovered mremap() behaviour to highlight the
>   fact that, if in-place, [old_address, old_address + new_length) may span
>   multiple VMAs also.
> * Fix up commit message for 2/2 to correct typo on specified range.
> * Added code sample to 1/2 as per Alejandro.
>
> v3:
> * Use more precise language around mremap() move description as per Jann.
> * Fix some typos in commit messages.
> https://lore.kernel.org/all/cover.1753795807.git.lorenzo.stoakes@oracle.com/
>
> v2:
> * Split out the two man page changes as requested by Alejandro.
> https://lore.kernel.org/all/cover.1753711160.git.lorenzo.stoakes@oracle.com/
>
> v1:
> https://lore.kernel.org/all/20250723174634.75054-1-lorenzo.stoakes@oracle.com/
>
> Lorenzo Stoakes (2):
>   man/man2/mremap.2: describe multiple mapping move
>   man/man2/mremap.2: describe previously undocumented shrink behaviour
>
>  man/man2/mremap.2 | 111 +++++++++++++++++++++++++++++++++++++++++-----
>  1 file changed, 100 insertions(+), 11 deletions(-)
>
> --
> 2.50.1

Hey Alejandro,

Just wondering if this has everything you need, let me know if there's
anything I need to do here!

Cheers, Lorenzo